Introduction to Fangze Altar: The altar was first built in the ninth year of Jiajing in the Ming Dynasty (AD 1530), and was renovated in the fifteenth year of Qianlong's reign in the Qing Dynasty (AD 1750) in accordance with the orders of Emperor Qianlong. The yellow glazed brick altar surface was replaced with Aiqing stone altar surface. The current building was restored in 1981 according to the Qianlong period of the Qing Dynasty.
The altar is square in plan to symbolize the legend of "a round sky and a round earth". There is a mountain-shaped stone carving seat on the east and west sides of the southern half of the lower altar. There are fifteen mountain-shaped stone shrines on it, which are used to enshrine the five mountains, five towns and Wuling Mountains during worship. The east and west sides of the northern half are on each side. There is a water-shaped stone carving base, on which there are eight mountain-shaped stone shrines for worshiping the gods of Ansihai and Sidu. The northeastern part of the outer wall is a light pole, and the symmetrical northwest part has an original ridge.