Introduction to Jiugukou: During the Ming and Qing Dynasties, it was a heavily guarded military town all year round. The scenic spot is located at Hefangkou, Huaibei Town, Huairou County, because of Wangcheng Valley, Galaxy Valley, Baiyang Valley, Tengluo Valley, Xiangquan Valley, It is named after nine valleys including Yixiantian, Jingshi Valley, Taoyuan Valley and Niuti Valley.
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