Introduction to the Huangqian Hall: The Huangqian Hall is the main hall where the main altar and the matching tablets of the Praying for Grain Altar are usually enshrined. It was built in the 18th year of Yongle in the Ming Dynasty. It is located on the north side of the inner wall of the Praying for Grain Altar. It is composed of three glazed The door is connected to the altar, with blue glazed tiles on the roof of the verandah and stone railings. There is a platform in front of the hall, with eight levels in front of the platform and on the left and right. There is an ancient rare gate on the west side of the courtyard, and a plaque with the name "Huang Qian Hall" hanging under the eaves is a personal letter from Emperor Jiajing of the Ming Dynasty.