Not an official position, but a student studying in the Imperial College. In the Qing Dynasty, there were tribute students, namely "tribute supervisors", including Sui Gong, Yin Gong, Fu Gong, Ba Gong, You Gong, Yi Gong, Jian Sheng En Jian, You Jian, Yin Jian, Jie Jian, Guan Sheng, intelligent and good scholars of officials above the seventh grade, Lin Zeng and his students who were selected and promoted by academic officials, as well as the sons and daughters of officials in Manchuria, descendants of sages, etc. Before Qianlong, examinations were very strict, but later they gradually became empty prose. Students did not often study under supervision. In the early years of Tongzhi and Guangxu, there was a slight improvement, rotation and abandonment. In the late Qing Dynasty, there was a flood of donations to supervisors. Most of these supervisors asked for officials. In the name of supervisors, they were despised, which was different from the previous situation.