What you want to ask is "the enrollment code of China Central Radio and TV University". The enrollment code of China Central Radio and TV University is 5 1 16 1.

According to Baidu Encyclopedia, China Central Radio and Television University (CCTV) refers to TheOpenUniversityOfChina (hereinafter referred to as "Open University" and "OUC"), which is a unit directly under the Ministry of Education, an adult higher education institution approved by the Ministry of Education with the qualification of running adult higher education [3], and a new higher education institution facing China.