Sunday morning, the weather was very sunny, sunny. My father took me to visit the Military Museum in Beijing. I am very happy!

星期天的早晨，天气格外晴朗，阳光明媚。爸爸带着我去参观北京军事博物馆。我真是高兴极了！

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The video - The Tunnel Warfare, is produced based on the shooting of The Tunnel Warfare model in Beijing Military Museum.

这段视频是根据北京军事博物馆的《地道战》模型，拍摄编辑制作的。

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In an exhibition marking the 80th anniversary, Beijing's Military Museum displays what Chinese official websites say is a model of a new nuclear-powered attack submarine, the Shang.

ECONOMIST: China's military might