diff --git a/zig.php b/zig.php
index dd244ab..5f8f2d1 100644
--- a/zig.php
+++ b/zig.php
@@ -41,8 +41,7 @@ $b = false;
 var_dump($a + $b);
 echo "<br>";
 
-// 字符串连接
 $a = "abc100";
 $b = 100;
-var_dump($a . $b);    // 字符串连接操作
+var_dump($a . $b);
 echo "<br>";