假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加，删除或修改。注意：1. 每处错误及其修改均仅限一个词；2. 只允许修改10处，多者（从第11处起）不计分。

Dear Sam,

    I hear that you'll travel to China next month. Now I'll tell you anything about it. Beijing is capital city of China. There are so many amazed places we cannot miss. For example, the Great Wall -- one of the seven wonder in the world, the Palace Museum and Yuan Ming Yuan. And you may also go to Hua Shan -- a dangerously steep mountain. At last I advise you to visit Hu Nan, that is famous for Zhang Jia Jie. In the way, have you ever heard of Mao Zedong, one of the greatest leaders in Chinese history? If you go to Shao Shan, you'll know many about him. Oh, I must be stop now, but I will get ready for my final exams.

                                                                                                                                                                         Yours,

                                                                                                                                                                         Ahfang

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