When applying for a master's degree, fresh graduates must choose the location of the candidate's undergraduate school, not the schools in other cities. If you don't choose the registration point as required, you may not be able to confirm it when you confirm it on site, and then you can't take the exam.
Postgraduate registration
All candidates (except students who are exempt from the exam) should check and confirm their online registration information at the designated place of the registration point within the specified time, and will not reissue them after the deadline. On-site confirmation time shall be determined and announced by the provincial education enrollment examination institutions according to the national enrollment work arrangement and local enrollment institutions.
Candidates are required to submit their resident ID card, academic degree certificate (fresh graduates hold student ID card) and online registration number for on-site confirmation, which will be checked by the staff at the registration point. Candidates who apply for the special postgraduate enrollment plan of "Retired University Student Soldiers" should also submit their "Approval Letter for Joining the Army" and "Certificate of Retirement from Active Service".
For the above contents, please refer to the Regulations of People's Republic of China (PRC) on the Administration of National Postgraduate Enrollment in 2020.