diff --git a/source/resources/index.md b/source/resources/index.md
index 0d7d3f0..7079455 100644
--- a/source/resources/index.md
+++ b/source/resources/index.md
@@ -9,10 +9,11 @@ Recently, I've been...
 | [The Go Programming Language][2] | 55% |
 | [Erlang程序设计（第2版）][3]| 50% |
 | [Erlang趣学指南][4]| 30%|
+| [把时间当作朋友](https://book.douban.com/subject/25749845/)| ✓ | 
 | [乌合之众：大众心理研究](https://zh.wikipedia.org/wiki/乌合之众：大众心理研究)|✓|
 | [月亮和六便士](https://zh.wikipedia.org/wiki/%E6%9C%88%E4%BA%AE%E5%92%8C%E5%85%AD%E4%BE%BF%E5%A3%AB)|✓ |
 | [解忧杂货店](https://book.douban.com/subject/25862578/)| ✓ |
-| [三體](https://zh.wikipedia.org/wiki/%E4%B8%89%E4%BD%93_(%E5%B0%8F%E8%AF%B4))| ✓|
+| [三體](https://zh.wikipedia.org/wiki/%E4%B8%89%E4%BD%93_(%E5%B0%8F%E8%AF%B4)| ✓|
 | [一个叫欧维的男人决定去死](https://book.douban.com/subject/26672693/)| ✓ |
 | [皮囊](https://book.douban.com/subject/26278687/)| ✓ |
 | [孩子们的诗](https://book.douban.com/subject/27133274/)| ✓ |