diff --git a/source/chapter2/04_Collection_Types.md b/source/chapter2/04_Collection_Types.md
index e69de29b..c25bf7b0 100644
--- a/source/chapter2/04_Collection_Types.md
+++ b/source/chapter2/04_Collection_Types.md
@@ -0,0 +1 @@
+# 集合类型 (Collection Types)
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