签中国签证，我们一共打算回国38天(机票已经定好了，我们２年前回国待了３个星期，倒给他签了６０天，今年可能是奥运会所以严点)，但签证官不让多待，只肯签了30天，我查了查怎么extend visa in china, 下面是我找到的最普遍的回答:How to Extend Your Visa?
Theoretically you should be able to get an extension by simply visiting the Public Security office in any Chinese town, and filling out a visa extension form. 我想问有没有相同经历的朋友们，不清楚要Ｅｘｔｅｎｄ ｖｉｓａ 到底容易不容易。谢谢大家的帮助！