diff --git a/.dumi/theme/Notice.tsx b/.dumi/theme/Notice.tsx
new file mode 100644
index 0000000..0c57640
--- /dev/null
+++ b/.dumi/theme/Notice.tsx
@@ -0,0 +1,43 @@
+import React, { useContext, useState, useEffect } from 'react';
+import './style/notice.less';
+
+interface NoticeProps {}
+
+const Notice: React.FC<NoticeProps> = () => {
+  const [visible, setVisible] = useState(true);
+
+  function onClose() {
+    setVisible(false);
+  }
+
+  if (visible) {
+    return (
+      <div className="__dumi-default-layout-notice">
+        <div
+          style={{ fontSize: '14px', fontWeight: 'bold', paddingTop: '4px' }}
+        >
+          需要帮助？
+        </div>
+        <div className="__dumi-default-layout-notice-qr" />
+        <div>扫码回复"brew"进群</div>
+        <span className="__dumi-default-layout-notice-close" onClick={onClose}>
+          <svg
+            viewBox="64 64 896 896"
+            focusable="false"
+            data-icon="close"
+            width="1em"
+            height="1em"
+            fill="currentColor"
+            aria-hidden="true"
+          >
+            <path d="M563.8 512l262.5-312.9c4.4-5.2.7-13.1-6.1-13.1h-79.8c-4.7 0-9.2 2.1-12.3 5.7L511.6 449.8 295.1 191.7c-3-3.6-7.5-5.7-12.3-5.7H203c-6.8 0-10.5 7.9-6.1 13.1L459.4 512 196.9 824.9A7.95 7.95 0 00203 838h79.8c4.7 0 9.2-2.1 12.3-5.7l216.5-258.1 216.5 258.1c3 3.6 7.5 5.7 12.3 5.7h79.8c6.8 0 10.5-7.9 6.1-13.1L563.8 512z"></path>
+          </svg>
+        </span>
+      </div>
+    );
+  } else {
+    return null;
+  }
+};
+
+export default Notice;
diff --git a/.dumi/theme/layout.tsx b/.dumi/theme/layout.tsx
index d77c48b..8c83065 100644
--- a/.dumi/theme/layout.tsx
+++ b/.dumi/theme/layout.tsx
@@ -5,6 +5,7 @@ import Navbar from 'dumi-theme-default/src/components/Navbar';
 import SideMenu from 'dumi-theme-default/src/components/SideMenu';
 import SlugList from 'dumi-theme-default/src/components/SlugList';
 import SearchBar from 'dumi-theme-default/src/components/SearchBar';
+import Notice from './Notice';
 import './style/layout.less';
 
 const Hero = hero => (
@@ -121,6 +122,7 @@ const Layout: React.FC<IRouteComponentProps> = ({ children, location }) => {
           />
         )}
       </div>
+      <Notice />
     </div>
   );
 };
diff --git a/.dumi/theme/style/layout.less b/.dumi/theme/style/layout.less
index ff988d9..6ed29c9 100644
--- a/.dumi/theme/style/layout.less
+++ b/.dumi/theme/style/layout.less
@@ -1,8 +1,6 @@
 @import './markdown.less';
 @import './variables.less';
 
-@s-toc-width: 136px;
-
 body {
   margin: 0;
   font-family: -apple-system, BlinkMacSystemFont, Segoe UI, PingFang SC,
@@ -62,6 +60,10 @@ body {
       top: 114px;
       max-height: calc(90vh - 144px);
     }
+
+    .@{prefix}-layout-notice {
+      bottom: 40px;
+    }
   }
 
   &-hero {
diff --git a/.dumi/theme/style/notice.less b/.dumi/theme/style/notice.less
new file mode 100644
index 0000000..84e70fd
--- /dev/null
+++ b/.dumi/theme/style/notice.less
@@ -0,0 +1,34 @@
+@import './variables.less';
+
+.@{prefix}-layout-notice {
+  position: fixed;
+  bottom: 40px;
+  right: 20px;
+  z-index: 19;
+  box-sizing: border-box;
+  width: @s-toc-width;
+  height: 180px;
+  background-color: #fff;
+  border: 1px solid #0074af;
+  border-radius: 4px;
+  box-shadow: 0 0 4px 4px #fff;
+  font-size: 12px;
+  text-align: center;
+  overflow: hidden;
+
+  &-qr {
+    width: @s-toc-width - 2;
+    height: @s-toc-width - 2;
+    background: url(@qr) no-repeat 100%;
+    background-size: 100% 100%;
+  }
+
+  &-close {
+    font-size: 18px;
+    color: #999;
+    position: absolute;
+    right: 4px;
+    top: 4px;
+    cursor: pointer;
+  }
+}
diff --git a/.dumi/theme/style/variables.less b/.dumi/theme/style/variables.less
index 222d8f9..27476cb 100644
--- a/.dumi/theme/style/variables.less
+++ b/.dumi/theme/style/variables.less
@@ -14,12 +14,14 @@
 @s-site-menu-width: 300px;
 @s-menu-mobile-width: 240px;
 @s-content-margin: 58px;
+@s-toc-width: 136px;
 
-@img-logo: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIQAAACCCAMAAACww5CIAAACf1BMVEUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD///8YkP8AAAACCxMamv/6+voaGhoXi/YYjv8aoP8cq/8dr/8bo/8cqP8bpv8Ykv8drv8BAwUcrP8Zlf8Xjf/s7OzLy8scp/8anP8ZmP/d3d0BBArg4ODT09O7u7sEGCsKCgoanf8YlP/8/Pz09PTIyMgMTIV1dXUGKEVEREQ0NDQODg4GBgYdsv8dsf8Zl//m5uYVgOXj4+MWgtfW1tYTc87BwcERbLWzs7Ovr6+np6cQX6OgoKCTk5MMSXlwcHBra2tiYmIVFRUetf/39/fp6ekWhOkXi+QVfNvY2NjPz88TdcUSb7u6urq3t7cPYK0NUJGQkJCLi4ttbW0JO2cINFtVVVVRUVEHMFEHLEs6OjoEHDEiIiIcHBwXj/vx8fEWh+4Sb8gRbL+rq6upqakOVZiWlpaJiYmGhoYMSIF9fX15eXkKPnQLRHJMTExHR0c9PT0FHzkqKiomJiYEFyUBBw8bovfu7u4Wht4UedsUeMrFxcW9vb0RZrOkpKSampoPXZqAgIALQmtlZWUJOGJZWVkIMFcFIUExMTEwMDAtLS0DEh8Zl/v4+PgXj/QWhvEWhvAYku8YjuwUfNcUfNAVfc0RaLkSaKsRZ6kPWqENUYlbW1sCEBhkSPCkAAAAOHRSTlMA87y4BeKrltbFnUDo0MCup6D67t7ayZKGemtmWS8rEwLNso1wVEpFGaR+UDUlHwmBYls5i1oN/DMym4YAAAfTSURBVHjaxNndS1NxHMfxX5s6t1Kz1KzsuazMnqjgyxv03ovtQrYxUBEfLkREVBQf0AsFBRUUQvEiSVFQ0YsuiiIiqKC/oH+o31lzjtPZg55zttfVNnbx5ffw+X53pmx5UFl2+XLZ4zpVOPWlJFTntYyiBwF/VbX39Sv9upYU9/QHjbXe6qqayrrnylXXi0kov3GVuFiMuNqbHhIu3FcuuohZZ+jDh7mdXkwqlGtKMGmOSFzrGiYe5ZL4+vdsd/SHFyYxtIQlIdiD4ftCa39osTlxRtzwHO1tUOLm0XYk6T3asMRtdKHdUs6qv+L1l/vKgak2SYjqN+1yYg2G5NgR4Pd5/F7fk9sO3YhSkoYkaW40KCk2Rj9KUoikqmtOn8YpydE6J7xFyq5yUhxIjvZJcUfZ5EOb6oxGQmPdtEQlR4Mxupc6IoOdzWiVypabaF1BiesIS876OiSufRXtvO0DcSi2dAN+ZcclYFZsCaOps3nYUOKprDTiSWzqAioCnpIX9ep03pxkw7jYtMWx0pdn7Jb2i1jixN3cM6OGFCti0zgpyopOsw6xiZHoyHIPLIhNHdD7bWR+c7znFD3+PNp+vxhmRkNi28BoWAzBPbQHKhdlQLe4ogsoVTl4ijYjrmiKATdUdvfjh9Ely8DVHFvWe3HJMBBQ2QWAd+KSeeBxjtuxKC7ZzG07Ht0DusQlfwDfs2wZ4b2EYVBcESHO81BlcIWESXHFV7Qss5aXY1FxRSj7L7QAhv3tsaVBMVn8Ou1MFUtjW3sYKjL0jO6QWJiA7iZxysBbtDplpRT4KZbQWkUbHRMnGFUUKwuNaH1iaRJ+Tf8bDbqcWJH2HuCV+l9DpkuxtdsuGlpYHNAJ1FqNMjnE9QocOXJCPwJ309zPT9la8e5yUJwwC/jTBNWQ5EkIqEyzHROSJzvWSeFDW5M8OUArsdgMq2EmanOyGB4WSyMYAhZp2TwkJouw2mZvmusUSwtraA//m7DXZ8SsBxiQM5tGSxNuv3+ZU/NmIpfN9qDXxp1sO4LDNrE202J6cHE1TVq2f1uNiA39K9/7JJ0JwGe6nvOSZ4OA1/R0bFbyrBWoMUX2nOTZAOA3pcSXjFW7UOJnU17VAYeZv98pTvsB1KsTRVXAtqQVA/rFWSNo11SKiuRYZeknEBRn7WJ4rZKuX8pcROvBj6g4rLUZQ8NJYBo2Jb/ax2KkhKYf6I1I3oWngKqUhfgkBTCL1pics1elICaS/5Y9jk+XBdEBeJKhHZGCCLZAWTIkBqQgNlr+NbGi2wHgS1tTAbQNAxW3i1R58WWgd725ANZ7gXPFNaqagrvwt1t7aW0qiOIAPlErPqJCq6JWrW8r1ar1xf0n4NxnnpCELEKyCNmkJZSQRSCbQltooS4sVApiC10U2kWhFRUEEdGF4vuNH8g7c9NQ2pjepPcB/r5ADjlnzp2ZM+QMXHeYb+1WfO5hi5QfveYe33XJ4+d8a3MNQHbI75KhMt9z9wF4FRNcIi3wO94bAHJiQHCHNgmgh3QD8D1MCK6I+KeNCUgbgFFRcEX8Qwhov014o/juUlEoxeqrgpsA7oWp4AZprnpv1ANgShFcoU4a+36jMgOuVGYmnuJ1Wb0hKWqCC8QCgI4dqyfRbNCFoqDBX7Xz6C0AS660K3UKQCdhuqAbdqFT+B8mAXQTbhtbpM7ng4Yn1oytOwFMu5AP9QGAa4Qz8lFwvFWIH6G7Qjijc8/LDueDyvd4z151EYBvwOF+lRFTAK6TGi+ACWdLk0ozANqvkpojAFJKRnCSlFt3m8pLc9bJTylVn64ty9rJfEl1cpVKbH3uJ2v1QleUqOCI2h9xeeP0aVqLCA4JSLk6s7hu6CbkqOAIGpyB7iRZ5xLvFWlHEkITyjK/41/v9h0AC3lngpCz0PXWf0yDUcmBhFDt0T/flx8CkNL8VLAZjUhvAHSQek5AtyALdqP5e9BdbPCkZsbuFRKVvlRHs/W1AfC902yNgoriWwCeqw1fSL+J2VkWNBF8vckr6mPQ3ZcjtkVBA/3z4Ju6Bs5ANzck2BQFpUMTxlVZQ4ege95vUxRUHoPOe5s01OWBbryf2hEFDX4Fc4Vs4gaYZ3ZEQeXBJPgMcFPnwYzJVmeE6jGsGCNAE/rAlPIBamkMQv9YCLpzxJRjYMr5BLXyg5EvgTlKTOoEkw2LUct6dTz4ojqCNO04mMm4ZE150mhMuQ+jHppwAUxqUM5QK9qkPLIE5jhpygkvmHJYiW45FaL8IwmdZy9pUtc2MK9HtvgloZngJyMVp3tJ846ASb7Q1NYrg1JN+ukDs4e05LwHTO5bUKG0tRBEeXAKzJ3rpEXdB8C9fBIWKW0hhOBIBdy2K6R11zvALY6EFYE21yHF4OdKEkz7ObIlXXvAhV4OquoApaYbpCo9qayA29lLturibhimSgOSFjG1ILRwYnwShn09xArnT8PwdnHML6n+hl+2gD8Wjj+rLMOwq49Y5dZpVKUWS++VcCwdCdT5/Uhck5SH45VpVO3qJFbq2Y5Vvly2VBgQY5KqKWI6HY+n06KiqVJMSQyP/37wB6v29xGrnThyEDWh5dyr+fJscbQw/OjRcGG0OFvO3n+QSqKm7exlYgsvNgolkyFs1HGV2OQgTGsjNjnVBtO8Owj3nwbhgWnttgWxy2PaoWaC+AuAXqWYKHupMgAAAABJRU5ErkJggg==';
+@img-logo: '';
 @prefix: __dumi-default;
 @mobile: ~'only screen and (max-width: 767px)';
 @desktop: ~'only screen and (min-width: 768px)';
 @icons: 'data:image/png;base64,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';
+@qr: 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
 .@{prefix}-icon {
   background: url(@icons) no-repeat ~'0 0/230px auto';
diff --git a/docs/guide/faq.md b/docs/guide/faq.md
index 804c027..ff1b7f0 100644
--- a/docs/guide/faq.md
+++ b/docs/guide/faq.md
@@ -1,8 +1,12 @@
+---
+order: 4
+---
+
 # FAQ
 
 ## M1 芯片 Mac 如何安装
 
-`Homebrew`已支持在`arm`上安装，但是一些软件兼容性还有待更新，官方查阅地址可看[说明](https://github.com/Homebrew/brew/issues/7857)。
+`Homebrew`已支持在`arm`上安装，但是一些软件兼容性还有待更新，官方查阅地址可看 [说明](https://github.com/Homebrew/brew/issues/7857) 。
 
 你可以考虑安装`x86`版本保持兼容性。
 
@@ -28,7 +32,7 @@ Use '--' to separate paths from revisions, like this:
 
 解决方案：
 
-- 根据文章[解决 GitHub 网页 githubusercontent 地址无法访问问题][hosts]，给`github.com`域名加速
+- 根据文章 [GitHub 访问加速指南][hosts] ，给`github.com`域名加速
 - 通过代理访问
 
 ## 设置镜像无效，安装还是很慢
@@ -97,3 +101,5 @@ To retry an incomplete download, remove the file above.
 
 - `/bin/bash` => `bash` => `.bash_profile`
 - `/bin/zsh` => `zsh` => `.zprofile`
+
+[hosts]: https://mp.weixin.qq.com/s/gFNP2Pk81vg7nE1XsDingg