diff --git a/Chapter4LifeCycle/README.md b/Chapter4LifeCycle/README.md
index bc09612..1303e41 100644
--- a/Chapter4LifeCycle/README.md
+++ b/Chapter4LifeCycle/README.md
@@ -16,3 +16,6 @@ Getting Started
 2. Download the sample.
 3. Import the sample into Android Studio.
 4. Build and run the sample.
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+
+230514 yejin edited
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