According to the data from official website, Central South University, candidates should get in touch with their tutors before entering the exam, and only after obtaining the consent of the tutors can they enter the exam. If the tutor doesn't reply for a long time, it may not be hopeless. You can wait patiently for the final admission result.
Central South University, located in Changsha, Hunan Province, is a national key university directly under the Ministry of Education of China.