diff --git a/CrossDown/Core.py b/CrossDown/Core.py
index 2eabd9d..a532a9c 100644
--- a/CrossDown/Core.py
+++ b/CrossDown/Core.py
@@ -199,11 +199,20 @@ class CodeLine(Treeprocessor):
             if elem.findall('code'):  # 找到单行代码
                 for code in elem:
                     if re.match(r'\$[^$]*\$', code.text):  # 渲染Latex
-                        if isinstance(elem.text, str):
-                            elem.text += fr'\({code.text[1:-1]}\){code.tail}'
+                        if isinstance(elem.text, str):  # 这个段落还有其它内容
+                            elem.text += fr'\({code.text[1:-1]}\){code.tail}'  # 插入latex
                         else:
-                            elem.text = fr'\({code.text}\)'
+                            elem.text = fr'\({code.text}\)'  # latex是段落中唯一的内容
                         elem.remove(code)
+                    elif re.match(r'¥[^$]*¥', code.text):  # 是数学函数(单行)
+                        if EXTRA_ABLE:
+                            expression, range_ = re.findall(r'¥([^$]*)¥(€[^$]*€)?', code)[0]  # 分离表达式与范围(如果有)
+                            x_r = (-10, 10)
+                            y_r = (-20, 20)
+                    elif re.match(r'\{[^$]*}', code.text):  # 是强调
+                        code.tag = 'span'
+                        code.set('class', 'block')
+                        code.text = code.text[1:-1]
 
 
 class Basic(Extension):
diff --git a/README.html b/README.html
index ea43ae0..f284751 100644
--- a/README.html
+++ b/README.html
@@ -179,7 +179,7 @@
     <p><code>¥y=x**2¥€-50,50€</code>  // 定义了x范围</p>
     <p><code>¥y=x**3¥€-50,50|-100,100€</code>  // 定义了y范围</p>
     <h3 id="4.1.3">4.1.3 强调</h3>
-    <p><code>{强调文本}</code></p>
+    <p><span class="block">强调文本</span></p>
     <h2 id="4.2">4.2 多行</h2>
     <h3 id="4.2.1">4.2.1 YAML</h3>
     <pre><code class="language-yaml">A:
@@ -195,11 +195,11 @@
     <pre><code class="language-python">print('CrossDown')
     </code></pre>
     <h3 id="4.2.3">4.2.3 Mermaid</h3>
-    <pre><code class="language-mermaid">graph LR
-        A--&gt;B
-        A--&gt;C
-        B--&gt;D
-        C--&gt;D
+    <pre><code class="language-mermaid">graph TD  
+        A[开始]--&gt;B[流程]  
+        B--&gt;C{判断}  
+        C--&gt;|结果1|D[结束1]  
+        C--&gt;|结果2|E[结束2]
     </code></pre>
     <h1 id="5">5 转义</h1>
     <p>\ </p>
diff --git a/README.md b/README.md
index b795604..a7094db 100644
--- a/README.md
+++ b/README.md
@@ -134,11 +134,11 @@ print('CrossDown')
 4.2.3 Mermaid
 
 ```mermaid
-graph LR
-    A-->B
-    A-->C
-    B-->D
-    C-->D
+graph TD  
+    A[开始]-->B[流程]  
+    B-->C{判断}  
+    C-->|结果1|D[结束1]  
+    C-->|结果2|E[结束2]
 ```
 
 5 转义