Introduction to Cloud Gate: Cloud Gate is located on the Three Emperors Platform in Huashan Valley, under the Flying Stone. Biyuan of the Qing Dynasty recorded in "Hua Yue Qi Ze Ji": "Three Emperors Terrace is another mile away from Yunmen, and the big rocks stretch for many miles, standing like a pond, and cannot be accessed by ladders." There was a stone arch here, and people walking into the mountain could pass through it. Passing through the gate, it is called the third pass of Huashan.