diff --git a/api/memo.go b/api/memo.go
index b34403d7..cc76418d 100644
--- a/api/memo.go
+++ b/api/memo.go
@@ -1,5 +1,8 @@
 package api
 
+// MaxContentLength means the max memo content bytes is 1MB.
+const MaxContentLength = 1 << 30
+
 // Visibility is the type of a visibility.
 type Visibility string
 
@@ -37,7 +40,6 @@ type Memo struct {
 	Content    string     `json:"content"`
 	Visibility Visibility `json:"visibility"`
 	Pinned     bool       `json:"pinned"`
-	DisplayTs  int64      `json:"displayTs"`
 
 	// Related fields
 	Creator      *User       `json:"creator"`
@@ -86,8 +88,8 @@ type MemoFind struct {
 	VisibilityList []Visibility
 
 	// Pagination
-	Limit  int
-	Offset int
+	Limit  *int
+	Offset *int
 }
 
 type MemoDelete struct {
diff --git a/api/user_setting.go b/api/user_setting.go
index c6c8b477..a396261f 100644
--- a/api/user_setting.go
+++ b/api/user_setting.go
@@ -16,8 +16,6 @@ const (
 	UserSettingAppearanceKey UserSettingKey = "appearance"
 	// UserSettingMemoVisibilityKey is the key type for user preference memo default visibility.
 	UserSettingMemoVisibilityKey UserSettingKey = "memoVisibility"
-	// UserSettingMemoDisplayTsOptionKey is the key type for memo display ts option.
-	UserSettingMemoDisplayTsOptionKey UserSettingKey = "memoDisplayTsOption"
 )
 
 // String returns the string format of UserSettingKey type.
@@ -29,17 +27,14 @@ func (key UserSettingKey) String() string {
 		return "appearance"
 	case UserSettingMemoVisibilityKey:
 		return "memoVisibility"
-	case UserSettingMemoDisplayTsOptionKey:
-		return "memoDisplayTsOption"
 	}
 	return ""
 }
 
 var (
-	UserSettingLocaleValue                 = []string{"en", "zh", "vi", "fr", "nl", "sv", "de", "es", "uk", "ru", "it", "hant", "ko"}
-	UserSettingAppearanceValue             = []string{"system", "light", "dark"}
-	UserSettingMemoVisibilityValue         = []Visibility{Private, Protected, Public}
-	UserSettingMemoDisplayTsOptionKeyValue = []string{"created_ts", "updated_ts"}
+	UserSettingLocaleValue         = []string{"en", "zh", "vi", "fr", "nl", "sv", "de", "es", "uk", "ru", "it", "hant", "ko"}
+	UserSettingAppearanceValue     = []string{"system", "light", "dark"}
+	UserSettingMemoVisibilityValue = []Visibility{Private, Protected, Public}
 )
 
 type UserSetting struct {
@@ -83,15 +78,6 @@ func (upsert UserSettingUpsert) Validate() error {
 		if !slices.Contains(UserSettingMemoVisibilityValue, memoVisibilityValue) {
 			return fmt.Errorf("invalid user setting memo visibility value")
 		}
-	} else if upsert.Key == UserSettingMemoDisplayTsOptionKey {
-		memoDisplayTsOption := "created_ts"
-		err := json.Unmarshal([]byte(upsert.Value), &memoDisplayTsOption)
-		if err != nil {
-			return fmt.Errorf("failed to unmarshal user setting memo display ts option")
-		}
-		if !slices.Contains(UserSettingMemoDisplayTsOptionKeyValue, memoDisplayTsOption) {
-			return fmt.Errorf("invalid user setting memo display ts option value")
-		}
 	} else {
 		return fmt.Errorf("invalid user setting key")
 	}
diff --git a/server/memo.go b/server/memo.go
index 78e7cafd..0b0d2888 100644
--- a/server/memo.go
+++ b/server/memo.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
-	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -71,6 +70,10 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			}
 		}
 
+		if len(memoCreate.Content) > api.MaxContentLength {
+			return echo.NewHTTPError(http.StatusBadRequest, "Content size overflow, up to 1MB").SetInternal(err)
+		}
+
 		memoCreate.CreatorID = userID
 		memo, err := s.Store.CreateMemo(ctx, memoCreate)
 		if err != nil {
@@ -127,6 +130,10 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			return echo.NewHTTPError(http.StatusBadRequest, "Malformatted patch memo request").SetInternal(err)
 		}
 
+		if memoPatch.Content != nil && len(*memoPatch.Content) > api.MaxContentLength {
+			return echo.NewHTTPError(http.StatusBadRequest, "Content size overflow, up to 1MB").SetInternal(err)
+		}
+
 		memo, err = s.Store.PatchMemo(ctx, memoPatch)
 		if err != nil {
 			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to patch memo").SetInternal(err)
@@ -192,10 +199,10 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			memoFind.VisibilityList = visibilityList
 		}
 		if limit, err := strconv.Atoi(c.QueryParam("limit")); err == nil {
-			memoFind.Limit = limit
+			memoFind.Limit = &limit
 		}
 		if offset, err := strconv.Atoi(c.QueryParam("offset")); err == nil {
-			memoFind.Offset = offset
+			memoFind.Offset = &offset
 		}
 
 		list, err := s.Store.FindMemoList(ctx, memoFind)
@@ -214,20 +221,9 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			}
 		}
 
-		sort.Slice(pinnedMemoList, func(i, j int) bool {
-			return pinnedMemoList[i].DisplayTs > pinnedMemoList[j].DisplayTs
-		})
-		sort.Slice(unpinnedMemoList, func(i, j int) bool {
-			return unpinnedMemoList[i].DisplayTs > unpinnedMemoList[j].DisplayTs
-		})
-
 		memoList := []*api.Memo{}
 		memoList = append(memoList, pinnedMemoList...)
 		memoList = append(memoList, unpinnedMemoList...)
-
-		if memoFind.Limit != 0 {
-			memoList = memoList[memoFind.Offset:common.Min(len(memoList), memoFind.Offset+memoFind.Limit)]
-		}
 		return c.JSON(http.StatusOK, composeResponse(memoList))
 	})
 
@@ -399,11 +395,11 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to fetch memo list").SetInternal(err)
 		}
 
-		displayTsList := []int64{}
+		createdTsList := []int64{}
 		for _, memo := range list {
-			displayTsList = append(displayTsList, memo.DisplayTs)
+			createdTsList = append(createdTsList, memo.CreatedTs)
 		}
-		return c.JSON(http.StatusOK, composeResponse(displayTsList))
+		return c.JSON(http.StatusOK, composeResponse(createdTsList))
 	})
 
 	g.GET("/memo/all", func(c echo.Context) error {
@@ -436,10 +432,10 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 			memoFind.VisibilityList = visibilityList
 		}
 		if limit, err := strconv.Atoi(c.QueryParam("limit")); err == nil {
-			memoFind.Limit = limit
+			memoFind.Limit = &limit
 		}
 		if offset, err := strconv.Atoi(c.QueryParam("offset")); err == nil {
-			memoFind.Offset = offset
+			memoFind.Offset = &offset
 		}
 
 		// Only fetch normal status memos.
@@ -450,14 +446,6 @@ func (s *Server) registerMemoRoutes(g *echo.Group) {
 		if err != nil {
 			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to fetch all memo list").SetInternal(err)
 		}
-
-		sort.Slice(list, func(i, j int) bool {
-			return list[i].DisplayTs > list[j].DisplayTs
-		})
-
-		if memoFind.Limit != 0 {
-			list = list[memoFind.Offset:common.Min(len(list), memoFind.Offset+memoFind.Limit)]
-		}
 		return c.JSON(http.StatusOK, composeResponse(list))
 	})
 
diff --git a/store/memo.go b/store/memo.go
index 469491e6..328dd0e0 100644
--- a/store/memo.go
+++ b/store/memo.go
@@ -3,7 +3,6 @@ package store
 import (
 	"context"
 	"database/sql"
-	"encoding/json"
 	"fmt"
 	"strings"
 
@@ -43,7 +42,6 @@ func (raw *memoRaw) toMemo() *api.Memo {
 		// Domain specific fields
 		Content:    raw.Content,
 		Visibility: raw.Visibility,
-		DisplayTs:  raw.CreatedTs,
 		Pinned:     raw.Pinned,
 	}
 }
@@ -56,25 +54,6 @@ func (s *Store) ComposeMemo(ctx context.Context, memo *api.Memo) (*api.Memo, err
 		return nil, err
 	}
 
-	memoDisplayTsOptionKey := api.UserSettingMemoDisplayTsOptionKey
-	memoDisplayTsOptionSetting, err := s.FindUserSetting(ctx, &api.UserSettingFind{
-		UserID: memo.CreatorID,
-		Key:    &memoDisplayTsOptionKey,
-	})
-	if err != nil {
-		return nil, err
-	}
-	memoDisplayTsOptionValue := "created_ts"
-	if memoDisplayTsOptionSetting != nil {
-		err = json.Unmarshal([]byte(memoDisplayTsOptionSetting.Value), &memoDisplayTsOptionValue)
-		if err != nil {
-			return nil, fmt.Errorf("failed to unmarshal user setting memo display ts option value")
-		}
-	}
-	if memoDisplayTsOptionValue == "updated_ts" {
-		memo.DisplayTs = memo.UpdatedTs
-	}
-
 	return memo, nil
 }
 
@@ -329,6 +308,13 @@ func findMemoRawList(ctx context.Context, tx *sql.Tx, find *api.MemoFind) ([]*me
 		WHERE ` + strings.Join(where, " AND ") + `
 		ORDER BY memo.created_ts DESC
 	`
+	if find.Limit != nil {
+		query = fmt.Sprintf("%s LIMIT %d", query, *find.Limit)
+		if find.Offset != nil {
+			query = fmt.Sprintf("%s OFFSET %d", query, *find.Offset)
+		}
+	}
+
 	rows, err := tx.QueryContext(ctx, query, args...)
 	if err != nil {
 		return nil, FormatError(err)
diff --git a/web/src/components/DailyMemo.tsx b/web/src/components/DailyMemo.tsx
index 00125945..1555b766 100644
--- a/web/src/components/DailyMemo.tsx
+++ b/web/src/components/DailyMemo.tsx
@@ -9,7 +9,7 @@ interface Props {
 
 const DailyMemo: React.FC<Props> = (props: Props) => {
   const { memo } = props;
-  const displayTimeStr = utils.getTimeString(memo.displayTs);
+  const createdTimeStr = utils.getTimeString(memo.createdTs);
   const displayConfig: DisplayConfig = {
     enableExpand: false,
   };
@@ -17,7 +17,7 @@ const DailyMemo: React.FC<Props> = (props: Props) => {
   return (
     <div className="daily-memo-wrapper">
       <div className="time-wrapper">
-        <span className="normal-text">{displayTimeStr}</span>
+        <span className="normal-text">{createdTimeStr}</span>
       </div>
       <div className="memo-container">
         <MemoContent content={memo.content} displayConfig={displayConfig} />
diff --git a/web/src/components/DailyReviewDialog.tsx b/web/src/components/DailyReviewDialog.tsx
index 8ababb87..b8acd07d 100644
--- a/web/src/components/DailyReviewDialog.tsx
+++ b/web/src/components/DailyReviewDialog.tsx
@@ -31,10 +31,10 @@ const DailyReviewDialog: React.FC<Props> = (props: Props) => {
     .filter(
       (m) =>
         m.rowStatus === "NORMAL" &&
-        utils.getTimeStampByDate(m.displayTs) >= currentDateStamp &&
-        utils.getTimeStampByDate(m.displayTs) < currentDateStamp + DAILY_TIMESTAMP
+        utils.getTimeStampByDate(m.createdTs) >= currentDateStamp &&
+        utils.getTimeStampByDate(m.createdTs) < currentDateStamp + DAILY_TIMESTAMP
     )
-    .sort((a, b) => utils.getTimeStampByDate(a.displayTs) - utils.getTimeStampByDate(b.displayTs));
+    .sort((a, b) => utils.getTimeStampByDate(a.createdTs) - utils.getTimeStampByDate(b.createdTs));
 
   const handleShareBtnClick = () => {
     if (!memosElRef.current) {
diff --git a/web/src/components/Memo.tsx b/web/src/components/Memo.tsx
index c256a965..b75388dd 100644
--- a/web/src/components/Memo.tsx
+++ b/web/src/components/Memo.tsx
@@ -1,3 +1,4 @@
+import { Tooltip } from "@mui/joy";
 import copy from "copy-to-clipboard";
 import dayjs from "dayjs";
 import { memo, useEffect, useRef, useState } from "react";
@@ -34,15 +35,16 @@ const Memo: React.FC<Props> = (props: Props) => {
   const locationStore = useLocationStore();
   const userStore = useUserStore();
   const memoStore = useMemoStore();
-  const [displayTimeStr, setDisplayTimeStr] = useState<string>(getFormatedMemoTimeStr(memo.displayTs, i18n.language));
+  const [createdTimeStr, setCreatedTimeStr] = useState<string>(getFormatedMemoTimeStr(memo.createdTs, i18n.language));
   const memoContainerRef = useRef<HTMLDivElement>(null);
   const isVisitorMode = userStore.isVisitorMode();
+  const updatedTimeStr = getFormatedMemoTimeStr(memo.updatedTs, i18n.language);
 
   useEffect(() => {
     let intervalFlag: any = -1;
-    if (Date.now() - memo.displayTs < 1000 * 60 * 60 * 24) {
+    if (Date.now() - memo.createdTs < 1000 * 60 * 60 * 24) {
       intervalFlag = setInterval(() => {
-        setDisplayTimeStr(getFormatedMemoTimeStr(memo.displayTs, i18n.language));
+        setCreatedTimeStr(getFormatedMemoTimeStr(memo.createdTs, i18n.language));
       }, 1000 * 1);
     }
 
@@ -166,7 +168,7 @@ const Memo: React.FC<Props> = (props: Props) => {
     editorStore.setEditMemoWithId(memo.id);
   };
 
-  const handleMemoDisplayTimeClick = () => {
+  const handleMemoCreatedTimeClick = () => {
     showChangeMemoCreatedTsDialog(memo.id);
   };
 
@@ -184,9 +186,11 @@ const Memo: React.FC<Props> = (props: Props) => {
       {memo.pinned && <div className="corner-container"></div>}
       <div className="memo-top-wrapper">
         <div className="status-text-container">
-          <span className="time-text" onDoubleClick={handleMemoDisplayTimeClick}>
-            {displayTimeStr}
-          </span>
+          <Tooltip title={`Updated at ${updatedTimeStr}`} placement="top" arrow>
+            <span className="time-text" onDoubleClick={handleMemoCreatedTimeClick}>
+              {createdTimeStr}
+            </span>
+          </Tooltip>
           {memo.visibility !== "PRIVATE" && !isVisitorMode && (
             <span
               className={`status-text ${memo.visibility.toLocaleLowerCase()}`}
diff --git a/web/src/components/MemoList.tsx b/web/src/components/MemoList.tsx
index cf66fbde..ee177c81 100644
--- a/web/src/components/MemoList.tsx
+++ b/web/src/components/MemoList.tsx
@@ -1,6 +1,6 @@
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
-import { useLocationStore, useMemoStore, useShortcutStore, useUserStore } from "../store/module";
+import { useLocationStore, useMemoStore, useShortcutStore } from "../store/module";
 import { TAG_REG, LINK_REG } from "../labs/marked/parser";
 import * as utils from "../helpers/utils";
 import { DEFAULT_MEMO_LIMIT } from "../helpers/consts";
@@ -11,12 +11,10 @@ import "../less/memo-list.less";
 
 const MemoList = () => {
   const { t } = useTranslation();
-  const userStore = useUserStore();
   const memoStore = useMemoStore();
   const shortcutStore = useShortcutStore();
   const locationStore = useLocationStore();
   const query = locationStore.state.query;
-  const memoDisplayTsOption = userStore.state.user?.setting.memoDisplayTsOption;
   const { memos, isFetching } = memoStore.state;
   const [isComplete, setIsComplete] = useState<boolean>(false);
 
@@ -54,7 +52,7 @@ const MemoList = () => {
           if (
             duration &&
             duration.from < duration.to &&
-            (utils.getTimeStampByDate(memo.displayTs) < duration.from || utils.getTimeStampByDate(memo.displayTs) > duration.to)
+            (utils.getTimeStampByDate(memo.createdTs) < duration.from || utils.getTimeStampByDate(memo.createdTs) > duration.to)
           ) {
             shouldShow = false;
           }
@@ -79,7 +77,7 @@ const MemoList = () => {
   const pinnedMemos = shownMemos.filter((m) => m.pinned);
   const unpinnedMemos = shownMemos.filter((m) => !m.pinned);
   const memoSort = (mi: Memo, mj: Memo) => {
-    return mj.displayTs - mi.displayTs;
+    return mj.createdTs - mi.createdTs;
   };
   pinnedMemos.sort(memoSort);
   unpinnedMemos.sort(memoSort);
@@ -99,7 +97,7 @@ const MemoList = () => {
         console.error(error);
         toastHelper.error(error.response.data.message);
       });
-  }, [memoDisplayTsOption]);
+  }, []);
 
   useEffect(() => {
     const pageWrapper = document.body.querySelector(".page-wrapper");
@@ -134,7 +132,7 @@ const MemoList = () => {
   return (
     <div className="memo-list-container">
       {sortedMemos.map((memo) => (
-        <Memo key={`${memo.id}-${memo.displayTs}`} memo={memo} />
+        <Memo key={`${memo.id}-${memo.createdTs}`} memo={memo} />
       ))}
       {isFetching ? (
         <div className="status-text-container fetching-tip">
diff --git a/web/src/components/Settings/PreferencesSection.tsx b/web/src/components/Settings/PreferencesSection.tsx
index 07654528..28ff71e6 100644
--- a/web/src/components/Settings/PreferencesSection.tsx
+++ b/web/src/components/Settings/PreferencesSection.tsx
@@ -2,7 +2,7 @@ import { Select, Switch, Option } from "@mui/joy";
 import React from "react";
 import { useTranslation } from "react-i18next";
 import { useGlobalStore, useUserStore } from "../../store/module";
-import { VISIBILITY_SELECTOR_ITEMS, MEMO_DISPLAY_TS_OPTION_SELECTOR_ITEMS } from "../../helpers/consts";
+import { VISIBILITY_SELECTOR_ITEMS } from "../../helpers/consts";
 import AppearanceSelect from "../AppearanceSelect";
 import LocaleSelect from "../LocaleSelect";
 import "../../less/settings/preferences-section.less";
@@ -20,13 +20,6 @@ const PreferencesSection = () => {
     };
   });
 
-  const memoDisplayTsOptionSelectorItems = MEMO_DISPLAY_TS_OPTION_SELECTOR_ITEMS.map((item) => {
-    return {
-      value: item.value,
-      text: t(`setting.preference-section.${item.value}`),
-    };
-  });
-
   const handleLocaleSelectChange = async (locale: Locale) => {
     await userStore.upsertUserSetting("locale", locale);
     globalStore.setLocale(locale);
@@ -41,10 +34,6 @@ const PreferencesSection = () => {
     await userStore.upsertUserSetting("memoVisibility", value);
   };
 
-  const handleMemoDisplayTsOptionChanged = async (value: string) => {
-    await userStore.upsertUserSetting("memoDisplayTsOption", value);
-  };
-
   const handleIsFoldingEnabledChanged = (event: React.ChangeEvent<HTMLInputElement>) => {
     userStore.upsertLocalSetting({ ...localSetting, enableFoldMemo: event.target.checked });
   };
@@ -83,24 +72,6 @@ const PreferencesSection = () => {
           ))}
         </Select>
       </div>
-      <label className="form-label selector">
-        <span className="normal-text">{t("setting.preference-section.default-memo-sort-option")}</span>
-        <Select
-          className="!min-w-[10rem] w-auto text-sm"
-          value={setting.memoDisplayTsOption}
-          onChange={(_, value) => {
-            if (value) {
-              handleMemoDisplayTsOptionChanged(value);
-            }
-          }}
-        >
-          {memoDisplayTsOptionSelectorItems.map((item) => (
-            <Option key={item.value} value={item.value} className="whitespace-nowrap">
-              {item.text}
-            </Option>
-          ))}
-        </Select>
-      </label>
       <label className="form-label selector">
         <span className="normal-text">{t("setting.preference-section.enable-folding-memo")}</span>
         <Switch className="ml-2" checked={localSetting.enableFoldMemo} onChange={handleIsFoldingEnabledChanged} />
diff --git a/web/src/components/ShareMemoDialog.tsx b/web/src/components/ShareMemoDialog.tsx
index b35bc00a..ef2f3c98 100644
--- a/web/src/components/ShareMemoDialog.tsx
+++ b/web/src/components/ShareMemoDialog.tsx
@@ -44,7 +44,7 @@ const ShareMemoDialog: React.FC<Props> = (props: Props) => {
   const memoElRef = useRef<HTMLDivElement>(null);
   const memo = {
     ...propsMemo,
-    createdAtStr: utils.getDateTimeString(propsMemo.displayTs),
+    createdAtStr: utils.getDateTimeString(propsMemo.createdTs),
   };
   const createdDays = Math.ceil((Date.now() - utils.getTimeStampByDate(user.createdTs)) / 1000 / 3600 / 24);
 
diff --git a/web/src/helpers/consts.ts b/web/src/helpers/consts.ts
index ca772065..c1f103ab 100644
--- a/web/src/helpers/consts.ts
+++ b/web/src/helpers/consts.ts
@@ -13,11 +13,6 @@ export const VISIBILITY_SELECTOR_ITEMS = [
   { text: "PUBLIC", value: "PUBLIC" },
 ];
 
-export const MEMO_DISPLAY_TS_OPTION_SELECTOR_ITEMS = [
-  { text: "created_ts", value: "created_ts" },
-  { text: "updated_ts", value: "updated_ts" },
-];
-
 // space width for tab action in editor
 export const TAB_SPACE_WIDTH = 2;
 
diff --git a/web/src/helpers/filter.ts b/web/src/helpers/filter.ts
index d3538b9f..f41a1eb1 100644
--- a/web/src/helpers/filter.ts
+++ b/web/src/helpers/filter.ts
@@ -197,9 +197,9 @@ export const checkShouldShowMemo = (memo: Memo, filter: Filter) => {
     }
   } else if (type === "DISPLAY_TIME") {
     if (operator === "BEFORE") {
-      return memo.displayTs < dayjs(value).valueOf();
+      return memo.createdTs < dayjs(value).valueOf();
     } else {
-      return memo.displayTs > dayjs(value).valueOf();
+      return memo.createdTs >= dayjs(value).valueOf();
     }
   } else if (type === "VISIBILITY") {
     let matched = memo.visibility === value;
diff --git a/web/src/pages/EmbedMemo.tsx b/web/src/pages/EmbedMemo.tsx
index a4f5b50a..064bb52b 100644
--- a/web/src/pages/EmbedMemo.tsx
+++ b/web/src/pages/EmbedMemo.tsx
@@ -48,7 +48,7 @@ const EmbedMemo = () => {
         <main className="w-full max-w-lg mx-auto my-auto shadow px-4 py-4 rounded-lg">
           <div className="w-full flex flex-col justify-start items-start">
             <div className="w-full mb-2 flex flex-row justify-start items-center text-sm text-gray-400 dark:text-gray-300">
-              <span>{dayjs(state.memo.displayTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss")}</span>
+              <span>{dayjs(state.memo.createdTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss")}</span>
               <a className="ml-2 hover:underline hover:text-green-600" href={`/u/${state.memo.creator.id}`}>
                 @{state.memo.creator.nickname || state.memo.creator.username}
               </a>
diff --git a/web/src/pages/Explore.tsx b/web/src/pages/Explore.tsx
index 6f4089d8..db9c31ba 100644
--- a/web/src/pages/Explore.tsx
+++ b/web/src/pages/Explore.tsx
@@ -76,7 +76,7 @@ const Explore = () => {
   const sortedMemos = shownMemos
     .filter((m) => m.rowStatus === "NORMAL")
     .sort((mi: Memo, mj: Memo) => {
-      return mj.displayTs - mi.displayTs;
+      return mj.createdTs - mi.createdTs;
     });
 
   const handleFetchMoreClick = async () => {
@@ -141,7 +141,7 @@ const Explore = () => {
           <main className="memos-wrapper">
             <MemoFilter />
             {sortedMemos.map((memo) => {
-              const createdAtStr = dayjs(memo.displayTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss");
+              const createdAtStr = dayjs(memo.createdTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss");
               return (
                 <div className="memo-container" key={memo.id}>
                   <div className="memo-header">
diff --git a/web/src/pages/MemoDetail.tsx b/web/src/pages/MemoDetail.tsx
index 5c02fe64..e50f9b3c 100644
--- a/web/src/pages/MemoDetail.tsx
+++ b/web/src/pages/MemoDetail.tsx
@@ -78,7 +78,7 @@ const MemoDetail = () => {
             <div className="memo-container">
               <div className="memo-header">
                 <div className="status-container">
-                  <span className="time-text">{dayjs(state.memo.displayTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss")}</span>
+                  <span className="time-text">{dayjs(state.memo.createdTs).locale(i18n.language).format("YYYY/MM/DD HH:mm:ss")}</span>
                   <a className="name-text" href={`/u/${state.memo.creator.id}`}>
                     @{state.memo.creator.nickname || state.memo.creator.username}
                   </a>
diff --git a/web/src/store/module/memo.ts b/web/src/store/module/memo.ts
index 7bb24abe..c92c0f45 100644
--- a/web/src/store/module/memo.ts
+++ b/web/src/store/module/memo.ts
@@ -10,7 +10,6 @@ const convertResponseModelMemo = (memo: Memo): Memo => {
     ...memo,
     createdTs: memo.createdTs * 1000,
     updatedTs: memo.updatedTs * 1000,
-    displayTs: memo.displayTs * 1000,
   };
 };
 
diff --git a/web/src/store/module/user.ts b/web/src/store/module/user.ts
index 58f5a28a..bfbdf793 100644
--- a/web/src/store/module/user.ts
+++ b/web/src/store/module/user.ts
@@ -10,7 +10,6 @@ const defaultSetting: Setting = {
   locale: "en",
   appearance: getSystemColorScheme(),
   memoVisibility: "PRIVATE",
-  memoDisplayTsOption: "created_ts",
 };
 
 const defaultLocalSetting: LocalSetting = {
diff --git a/web/src/types/modules/memo.d.ts b/web/src/types/modules/memo.d.ts
index cb2bd11d..4beb267d 100644
--- a/web/src/types/modules/memo.d.ts
+++ b/web/src/types/modules/memo.d.ts
@@ -13,7 +13,6 @@ interface Memo {
   content: string;
   visibility: Visibility;
   pinned: boolean;
-  displayTs: TimeStamp;
 
   creator: User;
   resourceList: Resource[];
diff --git a/web/src/types/modules/setting.d.ts b/web/src/types/modules/setting.d.ts
index b88fe61c..b20b0e28 100644
--- a/web/src/types/modules/setting.d.ts
+++ b/web/src/types/modules/setting.d.ts
@@ -4,7 +4,6 @@ interface Setting {
   locale: Locale;
   appearance: Appearance;
   memoVisibility: Visibility;
-  memoDisplayTsOption: "created_ts" | "updated_ts";
 }
 
 interface LocalSetting {