diff --git a/IX. ‘How-to’ guides/63. Properties & configuration.md b/IX. ‘How-to’ guides/63. Properties & configuration.md
index 9295485..1d00fc7 100644
--- a/IX. ‘How-to’ guides/63. Properties & configuration.md	
+++ b/IX. ‘How-to’ guides/63. Properties & configuration.md	
@@ -1 +1 @@
-### 属性&配置
+### 63. 属性&配置