From 863a7d115133f54b80a474da13ee5dbe50d0de44 Mon Sep 17 00:00:00 2001
From: jaysunxiao <jaysunxiao.gmail.com>
Date: Sat, 4 Dec 2021 18:28:27 +0800
Subject: [PATCH] doc

---
 doc/demo01_hello/3.node.md                      | 1 +
 doc/demo01_hello/{4.resource.md => 4.sprite.md} | 0
 2 files changed, 1 insertion(+)
 rename doc/demo01_hello/{4.resource.md => 4.sprite.md} (100%)

diff --git a/doc/demo01_hello/3.node.md b/doc/demo01_hello/3.node.md
index 3f058e0..f28c8c9 100644
--- a/doc/demo01_hello/3.node.md
+++ b/doc/demo01_hello/3.node.md
@@ -56,6 +56,7 @@ CTRL + Z ，撤销上一步操作
 
 - 在2D画面中，两个对象如果重叠，谁显示在上面呢？
 - 按照节点的顺序
+- 在数据结构上的专业术语叫树的深度优先遍历，深度优先遍历的顺序就是最后显示的顺序
 
 ![Image text](../demo05_scene_node/image/节点.png)
 ![Image text](../demo05_scene_node/image/节点渲染顺序.png)
diff --git a/doc/demo01_hello/4.resource.md b/doc/demo01_hello/4.sprite.md
similarity index 100%
rename from doc/demo01_hello/4.resource.md
rename to doc/demo01_hello/4.sprite.md