diff --git a/2077/readme.md b/2077/readme.md
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@@ -5,3 +5,7 @@
 * 拼多多 https://www.zhihu.com/question/49126610/answer/234944981
 
 * 企查查 https://www.zhihu.com/question/49126610/answer/234944981
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+* 质量渗透效应 https://www.zhihu.com/question/437181397/answer/1663670296
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+* 社会主义  https://www.zhihu.com/question/302242038/answer/672306039