commit 986196575a8514406002b870e16ee9068950d2fa
Author: xlc <xlc@example.com>
Date:   Mon Nov 4 16:31:51 2019 +0800

    first

diff --git a/README.md b/README.md
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+# Introduction
+
diff --git a/SUMMARY.md b/SUMMARY.md
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+# Summary
+
+* [Introduction](README.md)
+