Conduct supervision and research. According to relevant data, Jia Gang, deputy director of the Zibo Municipal Bureau of Justice, led a team to Huantai County to conduct supervision and investigation on the rule of law. During the supervision and investigation, Jia Gang fully affirmed the rule of law construction in Huantai County. Zibo, a municipality under the jurisdiction of Shandong Province, is located in the east of China and the middle of Shandong Province, with Linyi in the south, Dongying and Binzhou in the north, Weifang in the east and Jinan, the provincial capital, in the west. It is located in the efficient eco-economic zone of the Yellow River Delta.