Within 20 working days. According to the notice of Haimen Education and Sports Bureau, in addition to the household registration matters handled on the spot, Haimen Education and Sports Bureau will conduct examination and approval within 20 working days after accepting the household registration application. The District Education and Sports Bureau is the working department of the district government, and it is a section-level department. The Education Working Committee of Haimen District Committee of the Communist Party of China (hereinafter referred to as the Education Working Committee of the District Committee) is co-located with the District Education and Sports Bureau, and a set of working institutions and two institutional names are implemented. The daily work of the education leading group of the district committee is undertaken by the education working committee of the district committee, and the education supervision office of the district government is located in the district education and sports bureau.