diff --git a/build/index.js b/build/index.js
index 2ece9623f..60d97369d 100644
--- a/build/index.js
+++ b/build/index.js
@@ -4,7 +4,6 @@ const ignoreFailure = require('./ignoreFailure');
 
 async function build(type) {
     if (!['development', 'production'].includes(type)) throw new Error(`Unknown type: ${type}`);
-    ignoreFailure(fs.mkdirSync, root('.cache'));
     ignoreFailure(fs.mkdirSync, root('.build'));
     await require('./locales')(type);
     await require('./buildModule')(type);
diff --git a/hydro/lib/axios.js b/hydro/lib/axios.js
index 1714e373d..c3c65b353 100644
--- a/hydro/lib/axios.js
+++ b/hydro/lib/axios.js
@@ -20,4 +20,4 @@ async function post(url, data, options) {
     return res;
 }
 
-global.Hydro['lib.axios'] = module.exports = { get, post };
+global.Hydro.lib.axios = module.exports = { get, post };
diff --git a/hydro/lib/download.js b/hydro/lib/download.js
index 23dd26d3f..033ec1b3c 100644
--- a/hydro/lib/download.js
+++ b/hydro/lib/download.js
@@ -20,4 +20,4 @@ async function download(url, path, retry = 3) {
     return r;
 }
 
-global.Hydro['lib.download'] = module.exports = download;
+global.Hydro.lib.download = module.exports = download;
diff --git a/module/module-pastebin/handler.js b/module/module-pastebin/handler.js
index a6c838ea2..36205fb07 100644
--- a/module/module-pastebin/handler.js
+++ b/module/module-pastebin/handler.js
@@ -6,7 +6,12 @@ const { nav } = global.Hydro.lib;
 class PasteShowHandler extends Handler {
     async get({ docId }) {
         const doc = await pastebin.get(docId);
-        this.response.body = { doc };
+        const path = [
+            ['Hydro', '/'],
+            ['paste_show', null],
+            [doc.title, null, true],
+        ];
+        this.response.body = { path, doc };
         this.response.template = 'paste_show.html';
     }
 }
@@ -17,6 +22,11 @@ class PasteCreateHandler extends Handler {
     }
 
     async get() {
+        const path = [
+            ['Hydro', '/'],
+            ['paste_create', null],
+        ];
+        this.response.body = { path };
         this.response.template = 'paste_create.html';
     }
 
diff --git a/module/module-pastebin/locale/en.yaml b/module/module-pastebin/locale/en.yaml
new file mode 100644
index 000000000..f26525ef6
--- /dev/null
+++ b/module/module-pastebin/locale/en.yaml
@@ -0,0 +1,2 @@
+paste_create: Create a paste
+paste_show: Read a paste
diff --git a/module/module-pastebin/locale/zh_CN.yaml b/module/module-pastebin/locale/zh_CN.yaml
index bbf1830ef..353817be6 100644
--- a/module/module-pastebin/locale/zh_CN.yaml
+++ b/module/module-pastebin/locale/zh_CN.yaml
@@ -1 +1,3 @@
-pastebin: 剪贴板
\ No newline at end of file
+pastebin: 剪贴板
+paste_create: 创建新内容
+paste_show: 查看内容
diff --git a/module/problem-import-syzoj/handler.js b/module/problem-import-syzoj/handler.js
index 46e1c65cd..4e67112f8 100644
--- a/module/problem-import-syzoj/handler.js
+++ b/module/problem-import-syzoj/handler.js
@@ -1,7 +1,7 @@
 const assert = require('assert');
 
-const download = global.Hydro['lib.download'];
-const axios = global.Hydro['lib.axios'];
+const { download } = global.Hydro.lib;
+const { axios } = global.Hydro.lib;
 const { ValidationError, RemoteOnlineJudgeError } = global.Hydro.error;
 
 async function syzoj(url) {
diff --git a/templates/partials/path.html b/templates/partials/path.html
index d6b57b449..d3ee93d6c 100644
--- a/templates/partials/path.html
+++ b/templates/partials/path.html
@@ -5,7 +5,7 @@
       <div class="media__body">
         <div class="location-path">
         {% for c in path %}
-          / {% if c[1] %}<a href="{{ c[1] }}">{{ c[0] if c[2] else _(c[0]) }}</a>{% endif %}
+          / {% if loop.index < path.length %}<a href="{{ c[1]|default('#') }}">{{ c[0] if c[2] else _(c[0]) }}</a>{% endif %}
         {%- endfor %}
         </div>
         <h1 class="location-current" data-emoji-enabled>{{ path[path.length - 1][0] if path[path.length - 1][2] else _(path[path.length - 1][0]) }}</h1>
diff --git a/ui/pages/home_messages.page.js b/ui/pages/home_messages.page.js
index a23af7425..10564245f 100644
--- a/ui/pages/home_messages.page.js
+++ b/ui/pages/home_messages.page.js
@@ -36,6 +36,9 @@ const page = new NamedPage('home_messages', () => {
     reduxStore = store;
 
     const sock = new SockJs('/home/messages-conn');
+    sock.onopen = () => {
+      sock.send(document.cookie);
+    };
     sock.onmessage = (message) => {
       const msg = JSON.parse(message.data);
       store.dispatch({
diff --git a/ui/pages/judge_playground.page.js b/ui/pages/judge_playground.page.js
index aaa0ff7c5..7288184b0 100644
--- a/ui/pages/judge_playground.page.js
+++ b/ui/pages/judge_playground.page.js
@@ -6,8 +6,8 @@ const page = new NamedPage('judge_playground', async () => {
   const { default: SockJs } = await import('sockjs-client');
 
   const sock = new SockJs('/judge/consume-conn');
-
   sock.onopen = () => {
+    sock.send(document.cookie);
     const div = $('<div class="section visible">').appendTo('#messages');
     $('<div class="section__header"><h1 class="section__title">Connection opened.</h1></div>')
       .appendTo(div);
diff --git a/ui/pages/problem_detail.page.js b/ui/pages/problem_detail.page.js
index bb67c186d..77611115e 100644
--- a/ui/pages/problem_detail.page.js
+++ b/ui/pages/problem_detail.page.js
@@ -168,6 +168,9 @@ const page = new NamedPage(['problem_detail', 'contest_detail_problem', 'homewor
     } = await loadReactRedux(ScratchpadReducer);
 
     const sock = new SockJs(Context.socketUrl);
+    sock.onopen = () => {
+      sock.send(document.cookie);
+    };
     sock.onmessage = (message) => {
       const msg = JSON.parse(message.data);
       store.dispatch({