diff --git a/book/00-On-Java-8.md b/book/00-On-Java-8.md
index 4520a87..eaa8b6a 100644
--- a/book/00-On-Java-8.md
+++ b/book/00-On-Java-8.md
@@ -10,34 +10,50 @@
 <p style="font-size: 2em;font-weight: bold;text-align: center">Bruce Eckel</p>
 
 
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 **MindView LLC**
 
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 **2017**
 
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 *©MindView LLC 版权所有*
 
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 </center>
 
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 <div style="page-break-after: always;"></div>
 
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 <div align="left">
 <img src="https://raw.githubusercontent.com/LingCoder/OnJava8/master/images/level_1_title.png" alt="level_1_title" style="float:left;padding: 0px 20px" />
 </div>
 
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 # On Java 8
 
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 <center>
 
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 **版权©2017**
 
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 **作者 Bruce Eckel, President, MindView LLC.**
 
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 **版本号：7**
 
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 **ISBN 978-0-9818725-2-0**
 
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 **原书可在该网站购买  [www.OnJava8.com](www.OnJava8.com)** 
 
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 </center>