diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index a18252e43..c54c1000f 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.14.6",
+    "version": "2.14.7",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/sysinfo.ts b/packages/hydrojudge/src/sysinfo.ts
index 7169926e3..f9778f7f5 100644
--- a/packages/hydrojudge/src/sysinfo.ts
+++ b/packages/hydrojudge/src/sysinfo.ts
@@ -44,6 +44,7 @@ int main(){
                 time_limit_rate: 1,
                 domain: [],
                 key: '',
+                hidden: false,
             }),
             tmpdir: path.resolve(getConfig('tmp_dir'), 'sysinfo'),
         };
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 44c7b64ff..d4116a05f 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.8.6",
+    "version": "3.8.7",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/entry/common.ts b/packages/hydrooj/src/entry/common.ts
index c89d74b36..300943eff 100644
--- a/packages/hydrooj/src/entry/common.ts
+++ b/packages/hydrooj/src/entry/common.ts
@@ -4,6 +4,7 @@ import os from 'os';
 import path from 'path';
 import fs from 'fs-extra';
 import yaml from 'js-yaml';
+import i18n from '../lib/i18n';
 import { Logger } from '../logger';
 import * as bus from '../service/bus';
 
@@ -75,7 +76,7 @@ export async function locale(pending: string[], fail: string[]) {
                     const content = fs.readFileSync(path.resolve(p, file)).toString();
                     locales[file.split('.')[0]] = yaml.load(content);
                 }
-                global.Hydro.lib.i18n(locales);
+                i18n(locales);
                 logger.info('Locale init: %s', i);
             } catch (e) {
                 fail.push(i);
diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index aa3c60c5c..4a5fc3335 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -311,13 +311,17 @@ export class ProblemDetailHandler extends ProblemHandler {
             if (!ddoc || !pdoc) throw new ProblemNotFoundError(this.pdoc.reference.domainId, this.pdoc.reference.pid);
             this.pdoc.config = pdoc.config;
         }
-        if (ddoc.langs && typeof this.pdoc.config !== 'string') {
-            const dl = ddoc.langs.split(',').map((i) => i.trim()).filter((i) => i);
-            this.pdoc.config.langs = intersection(this.pdoc.config.langs || dl, dl);
-        }
-        if (this.domain.langs && typeof this.pdoc.config !== 'string') {
-            const dl = this.domain.langs.split(',').map((i) => i.trim()).filter((i) => i);
-            this.pdoc.config.langs = intersection(this.pdoc.config.langs || dl, dl);
+        if (typeof this.pdoc.config !== 'string') {
+            const t = [];
+            if (this.pdoc.config.langs) t.push(this.pdoc.config.langs);
+            if (ddoc.langs) t.push(ddoc.langs.split(',').map((i) => i.trim()).filter((i) => i));
+            if (this.domain.langs) t.push(this.domain.langs.split(',').map((i) => i.trim()).filter((i) => i));
+            if (this.pdoc.config.type === 'remote_judge') {
+                const p = this.pdoc.config.subType;
+                const dl = [p, ...Object.keys(setting.langs).filter((i) => i.startsWith(`${p}.`))];
+                t.push(dl);
+            }
+            if (t.length) this.pdoc.config.langs = intersection(...t);
         }
         await bus.serial('problem/get', this.pdoc, this);
         [this.psdoc, this.udoc] = await Promise.all([
diff --git a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
index e1e6cef48..264403331 100644
--- a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
+++ b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
@@ -68,11 +68,10 @@ const mapDispatchToProps = (dispatch) => ({
 
 const LANGS = {};
 const prefix = new Set(Object.keys(window.LANGS).filter((i) => i.includes('.')).map((i) => i.split('.')[0]));
-const domainId = UiContext.pdoc.reference?.domainId || UiContext.pdoc.domainId;
 for (const key in window.LANGS) {
   if (prefix.has(key)) continue;
   if (UiContext.pdoc.config.langs && !UiContext.pdoc.config.langs.includes(key)) continue;
-  if (window.LANGS[key].domain && !window.LANGS[key].domain.includes(domainId)) continue;
+  if (window.LANGS[key].hidden && !UiContext.pdoc.config.langs?.includes(key)) continue;
   LANGS[key] = window.LANGS[key];
 }
 const keys = Object.keys(LANGS);
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 8b8f0e731..55c63f997 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.33.5",
+  "version": "4.33.6",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
diff --git a/packages/ui-default/pages/problem_submit.page.js b/packages/ui-default/pages/problem_submit.page.js
index a11aced6c..b65ac5e0c 100644
--- a/packages/ui-default/pages/problem_submit.page.js
+++ b/packages/ui-default/pages/problem_submit.page.js
@@ -9,13 +9,12 @@ function setOptions($el, options) {
 
 const page = new NamedPage(['problem_submit', 'contest_detail_problem_submit', 'homework_detail_problem_submit'], async () => {
   const { config } = UiContext.pdoc;
-  const domainId = UiContext.pdoc.reference?.domainId || UiContext.pdoc.domainId;
 
   function onChangeMain(update = true) {
     const options = {};
     for (const key in window.LANGS) {
       if (config.langs && !config.langs.includes(key)) continue;
-      if (window.LANGS[key].domain && !window.LANGS[key].domain.includes(domainId)) continue;
+      if (window.LANGS[key].hidden && !config.langs?.includes(key)) continue;
       if (key.startsWith(`${this.value}.`) && key !== this.value) options[key] = window.LANGS[key].display;
     }
     setOptions($('#codelang-sub-select'), options);
@@ -31,7 +30,7 @@ const page = new NamedPage(['problem_submit', 'contest_detail_problem_submit', '
   const main = {};
   for (const key in window.LANGS) {
     if (config.langs && !config.langs.filter((i) => i === key || i.startsWith(`${key}.`)).length) continue;
-    if (window.LANGS[key].domain && !window.LANGS[key].domain.includes(domainId)) continue;
+    if (window.LANGS[key].hidden && !config.langs?.includes(key)) continue;
     if (!key.includes('.')) main[key] = window.LANGS[key].display;
     else {
       const a = key.split('.')[0];
@@ -39,6 +38,7 @@ const page = new NamedPage(['problem_submit', 'contest_detail_problem_submit', '
     }
   }
   setOptions($('#codelang-main-select'), main);
+  if (Object.keys(main).length === 1) $('#codelang-main-container').hide();
 
   const current = $('[name="lang"]').val();
   if (current.includes('.')) {
diff --git a/packages/utils/lib/lang.ts b/packages/utils/lib/lang.ts
index 75bbdb7ac..871473688 100644
--- a/packages/utils/lib/lang.ts
+++ b/packages/utils/lib/lang.ts
@@ -10,8 +10,8 @@ export interface LangConfig {
     domain: string[];
     display: string;
     target?: string;
-    sub?: LangConfig[];
     key: string;
+    hidden: boolean;
 }
 
 export function parseLang(config: string): Record<string, LangConfig> {
@@ -23,13 +23,8 @@ export function parseLang(config: string): Record<string, LangConfig> {
         if (key.includes('.')) {
             const base = key.split('.')[0];
             const baseCfg = file[base];
-            if (baseCfg) {
-                for (const bkey in baseCfg) {
-                    if (bkey === 'sub') continue;
-                    if (!(bkey in entry)) entry[bkey] = baseCfg[bkey];
-                }
-                if (baseCfg.sub) baseCfg.sub.push(entry);
-                else baseCfg.sub = [entry];
+            for (const bkey in baseCfg || {}) {
+                if (!(bkey in entry)) entry[bkey] = baseCfg[bkey];
             }
         }
     }
@@ -41,6 +36,7 @@ export function parseLang(config: string): Record<string, LangConfig> {
         entry.code_file = entry.code_file || `foo.${key}`;
         entry.execute = entry.execute || '/w/foo';
         entry.key = key;
+        entry.hidden = entry.hidden || false;
     }
     return file;
 }
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 1352de884..99851bbd4 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/utils",
-    "version": "1.1.14",
+    "version": "1.1.15",
     "description": "hydrooj utils",
     "main": "package.json",
     "repository": "https://github.com/hydro-dev/Hydro.git",
@@ -8,11 +8,11 @@
     "license": "AGPL-3.0-or-later",
     "preferUnplugged": true,
     "dependencies": {
-        "fs-extra": "^10.0.0",
+        "fs-extra": "^10.0.1",
         "js-yaml": "^4.1.0",
         "moment": "^2.29.1",
         "mongodb": "^3.7.3",
-        "systeminformation": "^5.11.3"
+        "systeminformation": "^5.11.5"
     },
     "devDependencies": {
         "@types/fs-extra": "^9.0.13",