diff --git a/i18n/cdo.json b/i18n/cdo.json
index 4df94f5c9..36d38660b 100644
--- a/i18n/cdo.json
+++ b/i18n/cdo.json
@@ -7,56 +7,5 @@
 			"唐吉訶德的侍從"
 		]
 	},
-	"echo-desc": "通知系統",
-	"prefs-echo": "通知",
-	"prefs-emailsettings": "電批選項",
-	"prefs-echosubscriptions": "通知我茲幾萆事計",
-	"echo-pref-send-me": "發送給我：",
-	"echo-pref-send-to": "發送遘：",
-	"echo-pref-email-format": "電批格式：",
-	"echo-pref-web": "網頁",
-	"echo-pref-email": "電批",
-	"echo-pref-email-frequency-never": "伓使發給我任何通知",
-	"echo-pref-email-frequency-immediately": "伊各儂來辰候其个人通知",
-	"echo-pref-email-frequency-daily": "蜀日蜀回其通知總結",
-	"echo-pref-email-frequency-weekly": "蜀禮拜蜀回其通知總結",
-	"echo-pref-email-format-html": "HTML",
-	"echo-pref-email-format-plain-text": "純文本",
-	"echo-learn-more": "學習更更価仂囝",
-	"echo-new-messages": "汝有新其信息",
-	"echo-category-title-edit-user-talk": "討論頁 {{PLURAL:$1|條}}信息",
-	"echo-category-title-article-linked": "頁面{{PLURAL:$1|萆鏈接}}",
-	"echo-category-title-reverted": "修改{{PLURAL:$1|回退回}}",
-	"echo-category-title-mention": "提遘{{PLURAL:$1|回}}",
-	"echo-category-title-other": "{{PLURAL:$1|其它}}",
-	"echo-category-title-system": "{{PLURAL:$1|萆系統}}",
-	"echo-pref-tooltip-edit-user-talk": "有儂敆我其用戶頁發信息或者回覆其辰候通知我。",
-	"echo-pref-tooltip-article-linked": "有儂鏈接我趁另外蜀頁創建其頁面其辰候通知我。",
-	"echo-pref-tooltip-reverted": "有儂使撤銷或者回滾工具回退我其修改其辰候通知我。",
-	"echo-pref-tooltip-mention": "有儂鏈接遘我其用戶頁其辰候通知我。",
-	"notifications": "通知",
-	"tooltip-pt-notifications-alert": "{{GENDER:|Nṳ̄ gì}} tì-sĭng",
-	"echo-specialpage": "通知",
-	"echo-none": "汝無通知。",
-	"notification-link-text-view-message": "看蜀看信息",
-	"notification-link-text-view-mention": "看提遘其乇",
-	"notification-link-text-view-changes": "{{GENDER:$1|看蜀看}}改變",
-	"notification-link-text-view-page": "看蜀看頁面",
-	"notification-link-text-view-edit": "看蜀看修改",
-	"notification-header-reverted": "汝{{PLURAL:$4|敆$3上其修改}}已經乞$1{{GENDER:$2|回滾}}。",
-	"notification-edit-talk-page-email-subject2": "$1敆{{SITENAME}}𡅏給汝{{GENDER:$2|留下}}蜀條信息",
-	"notification-page-linked-email-subject": "汝創建其頁面鏈遘{{SITENAME}}",
-	"notification-reverted-email-subject2": "汝其{{PLURAL:$4|修改}}敆{{SITENAME}}𡅏乞{{GENDER:$2|回滾}}去",
-	"notification-mention-email-subject": "$1敆{{SITENAME}}𡅏{{GENDER:$2|提遘}}{{GENDER:$3|汝}}",
-	"notification-user-rights-email-subject": "汝其用戶權利敆{{SITENAME}}𡅏乞改去了。",
-	"echo-overlay-link": "全部通知",
-	"echo-overlay-title": "<b>通知</b>",
-	"echo-mark-all-as-read": "全部標記成已讀",
-	"echo-date-today": "今旦",
-	"echo-date-yesterday": "昨冥",
-	"echo-email-batch-subject-daily": "汝敆{{SITENAME}}𡅏有{{PLURAL:$2|新其通知}}",
-	"echo-email-batch-subject-weekly": "汝茲蜀禮拜敆{{SITENAME}}𡅏有{{PLURAL:$2|新其通知}}",
-	"echo-email-batch-body-intro-daily": "嘿$1，\n這是汝其今旦敆{{SITENAME}}懸頂其活動。",
-	"echo-email-batch-body-intro-weekly": "嘿$1，\n這是汝其茲蜀禮拜敆{{SITENAME}}懸頂其活動。",
-	"echo-email-batch-link-text-view-all-notifications": "看全部通知"
+	"tooltip-pt-notifications-alert": "{{GENDER:|Nṳ̄ gì}} tì-sĭng"
 }