diff --git a/docs/tutorials/README.md b/docs/tutorials/README.md
index 17ee8cf..f079e9e 100644
--- a/docs/tutorials/README.md
+++ b/docs/tutorials/README.md
@@ -17,3 +17,13 @@ Chinese : 更新为自己使用的镜像
 你好，我不会说中文，所以随便复制粘贴了一些东西。
 
 `日本語は話せません`
+
+## $\mathrm{Hello,}\ \LaTeX\mathrm{!}$ in title
+
+Make some $\LaTeX$ formulas here:
+
+$$\Re{z} =\frac{n\pi \dfrac{\theta +\psi}{2}}{
+\left(\dfrac{\theta +\psi}{2}\right)^2 + \left( \dfrac{1}{2}
+\log \left\lvert\dfrac{B}{A}\right\rvert\right)^2}$$
+
+And I can insert some inline formulas in articles like $2^k-\binom{k}{1}2^{k-1}+\binom{k}{2}2^{k-2}$ and $\frac{1}{\sqrt{\pi}}$.
\ No newline at end of file
diff --git a/index.html b/index.html
index 2a2060e..c9267fe 100644
--- a/index.html
+++ b/index.html
@@ -27,6 +27,7 @@
   </script>
   <!-- Docsify v4 -->
   <script src="./resources/js/docsify.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
   <script src="./resources/js/all.js"></script>
 </body>
 </html>
diff --git a/resources/js/docsify-latex.js b/resources/js/docsify-latex.js
new file mode 100644
index 0000000..07dc607
--- /dev/null
+++ b/resources/js/docsify-latex.js
@@ -0,0 +1,9 @@
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+ * v0.5.2
+ * https://scruel.github.io/docsify-latex/
+ * (c) 2022 Scruel Tao
+ * MIT license
+ */
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