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There are a lot of parks in Beijing. Beihai Park is a nice and a big one. It's very beautiful. There are many trees, flowers and a big lake in it. Every day a lot of people go to the park. It's Sunday today. It's sunny. Our classmates are playing in the park now. Some of us are singing and dancing under a big tree. Some are playing football near the lakes. Others are playing model planes over there. We are happy in the park.