Seventy-eight percent of the people of Lanzhou did not know that the people of the Gongtang! ! ! ! ! ! ! ! During the Tongzhi period (1862-1874), the Governor of Shaanxi and Gansu Zuo Zongxu Shangshu Qingting requested the establishment of a Gongyuan in Lanzhou and was approved. The Gongyuan in the first year of Guangxu (1875) was completed. At that time, the site was 140 feet long and 90 feet horizontal. It was said that it could accommodate 4,000 candidates. The main building was "to the Gongtang", Hengjiantang and Guanchengtang. The main building was basically intact, and there were corridors and vans. It now covers an area of 4,700 square meters and has a construction area of 3,000 square meters.