Who was the strategist when Cheng became emperor?
Xu Maogong (Li Ji), male, Han nationality (Emperor Taizong), is one of the eight males, ranking fourth. Qin and Weichi Gong were born in Xu Cun, Guxian Town, Qin County, Shaanxi Province, China. Xucun is named after Xu, and Xucun is his hometown, with "Mao Gong Temple" and "Mao Cemetery". "Xu Maogong invented the famous Shangdang dish Qinxian Dry Mill when he was fighting in Xucun Yue Ling, so Xucun became the birthplace of Qinzhou Dry Mill, Xucun, Dongzhai and Xizhai when he was fighting. Mao Gong grew up in Wen Zi School on Tongguanwo Mountain, lived in Xucun and studied in the mountain. These existing Uzhuo inscriptions were proved by the branch library (in Tongti Mountain). There is a Xu Maogong Temple in Xucun. Every year on April 13 and123 of the lunar calendar, there are festivals to worship ancestors, and operas are also performed. Every year in Tomb-Sweeping Day, during the Spring Festival, people from Xucun go to his grave to worship.