Why didn't Guangzhou Academy of Fine Arts guarantee research places?

Guangzhou Academy of Fine Arts has no postgraduate entrance examination places, because everyone has to take the unified entrance examination for graduate students. As far as we know, there are no places in Guang Mei that are exempt from the entrance examination for postgraduate entrance examination, and everyone has to take the unified entrance examination for postgraduate students. But there is a default situation, that is, the tutor has already chosen someone before the exam. As long as he passes the preliminary examination, there is basically no problem in admission.