Foreigners who apply for visa renewal in China usually go to the exit and entry administration department, not the consulate.
Consulates are mainly responsible for issuing entry visas for foreigners abroad. In China, the public security organs of local people’s governments at or above the county level and their exit and entry administration agencies are responsible for the renewal of visas for foreigners. Of course, there may be some differences in specific regulations and processing procedures among different countries. Generally speaking, visa renewal within China is handled by the immigration management department. It is recommended to understand the specific requirements and procedures of the local immigration management department in advance before applying for visa renewal, and prepare relevant materials in order to smoothly handle the renewal procedures.