Introduction to Daiyue Slope: Daiyue Slope is the best place to enjoy the moon on Langshan Mountain. The "Drinking Rainbow Stream" in the north of the slope used to have gurgling water all year round. There is a "Qin Stone" on the slope where you can play the piano under the moon. The nine "welcoming stones" on both sides of the south path are engraved with poems by ancient people visiting the mountains. The Imperial Stele Pavilion on the top used to be Biyun Bantian Pavilion. Now it was renamed Imperial Stele Pavilion because of the placement of the Imperial Stele. Two stone steles are stored in the pavilion. , a poem written by Emperor Kangxi on the Mid-Autumn Festival to express his condolences to Liu Hangao, the commander-in-chief of Langshan, and the governor of Tongzhou, saying: On the Mid-Autumn Festival of the bright moon, I wrote to people from overseas. Since today in Han Dynasty, thousands of miles of smoke and clouds have begun to bloom.