.

exp_legacy/module/locale/en/data.cfg

@@ -110,3 +110,5 @@ NetPlayTime=Net Play Time
 NetPlayTime-tooltip=Net Play Time
 AFKTimeRatio=AFK Time Ratio
 AFKTimeRatio-tooltip=AFK Time over Play Time
+Locale=Locale
+Locale-tooltip=The language of player interface

exp_legacy/module/locale/zh-CN/data.cfg

@@ -110,3 +110,5 @@ NetPlayTime=淨遊玩時間
 NetPlayTime-tooltip=遊玩時間減掛機時間
 AFKTimeRatio=掛機時間比
 AFKTimeRatio-tooltip=掛機時間除以遊玩時間
+Locale=語言
+Locale-tooltip=用戶介面語言

exp_legacy/module/locale/zh-TW/data.cfg

@@ -110,3 +110,5 @@ NetPlayTime=淨遊玩時間
 NetPlayTime-tooltip=遊玩時間減掛機時間
 AFKTimeRatio=掛機時間比
 AFKTimeRatio-tooltip=掛機時間除以遊玩時間
+Locale=語言
+Locale-tooltip=用戶介面語言

exp_legacy/module/modules/gui/playerdata.lua

@@ -72,6 +72,12 @@ local computed_stats = {
             return format_number_n(PlayerStats["AfkTime"]:get(player_name, 0) * 100 / PlayerStats["Playtime"]:get(player_name, 1))
         end,
     },
+    Locale = {
+        default = "en",
+        calculate = function(player_name)
+            return game.players[player_name].locale
+        end,
+    },
 }
 
 local label = Gui.element("label")