排列三直选和值与组选和值的区别简介:In front of Laiyuan Fort is the side wall of the Great Wall. On both sides are the towering Taiping Mountains. In the middle is a narrow West Border Gate, later called Xiaojing Gate, which is the only passage in and out of the Great Wall in the Zhangjiakou area.
In front of Laiyuan Fort is the side wall of the Great Wall. On both sides are the towering Taiping Mountains. In the middle is a narrow West Border Gate, later called Xiaojing Gate, which is the only passage in and out of the Great Wall in the Zhangjiakou area.