According to Tsinghua University, official website and Tsinghua University, the contract system will be formulated according to the actual situation and the nature of the recruitment position. You can solve the household registration problem through the contract system in Tsinghua. The hukou problem mainly refers to the problem that the hukou is located in the school. If Tsinghua University has relevant regulations on the workplace and household registration when recruiting contract employees, and the relevant regulations are clearly defined in the contract, then there will be some solutions to the household registration problem under this framework.