diff --git a/IPv6地址空间.md b/IPv6_address_space.md
similarity index 100%
rename from IPv6地址空间.md
rename to IPv6_address_space.md
diff --git a/SUMMARY.md b/SUMMARY.md
index 49f34e4..354ab64 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -28,6 +28,6 @@
 * [第40天，系统日志、简单网络管理协议与NetFlow软件](d40-Syslog-SNMP-and-Netflow.md)
 * [第41天，广域组网](d41-Wide-Area-Networking.md)
 * [第42天，帧中继与点对点协议](d42-Frame-Relay-and-PPP.md)
-* [附录：华为交换机端口镜像](port-mirroring.md)
-* [附录二：IPv6地址空间](IPv6地址空间.md)
+* [附录一：华为交换机端口镜像](port-mirroring.md)
+* [附录二：IPv6地址空间](IPv6_address_space.md)
 * [附录三：GNS3简介](GNS3_tutorial.md)
diff --git a/book.pdf b/book.pdf
index 307a8b0..1040afb 100644
Binary files a/book.pdf and b/book.pdf differ