假如你的笔友打算到北京旅游,他想了解北京的情况,请你根据提示,并作适当发挥,写一篇短文介绍北京。

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Beijing is one of the largest cities in the world. It's the capital of China. There are many places of interest. The Palace Museum is the most famous one. It was the home of the kings and queens in old times. You can also see some old buildings in it. The Great Wall is also world - famous. Thousands of people come to visit it every day. The Summer Palace is one of the famous parks. You can enjoy the beautiful views or row a boat on the lake in it. Moreover, people don't need to take much money. They can pay by using WeChat or Alipay.