Introduction to Damengmen Island: Damengmen Island is about 300 meters long, 50 meters wide, and about 10 meters above the water. On the stone cliff to the south, there are four large characters "Wuzhen Kuangliu" inscribed by Xu Huanying, the governor of Jinming County in the early Yongzheng period of the Qing Dynasty. The plaque is 2.5 meters long and 1 meter wide, which is a true portrayal of the wonders of the mountains and rivers here.