Introduction to Baiyang Shuiguan: Baiyang Shuiguan is the birthplace of Baiyang River. There are sweet springs in the river more than 500 meters above and below Shuiguan. It is a veritable water pass. Baiyangshui Pass is a double-channel water city, and the foundations of the waterfront enemy towers on the east bank still exist. This kind of water pass in the Great Wall is unique to Baiyangyu. After reconstruction, Baiyang Shuiguan will become "the best water pass in the Great Wall".