The code is 5 1 16 1. The advantage of Chengdu Open University is its low threshold and easy registration. You can register as long as you meet the registration conditions. The code of the National Open University is 5 1 16 1, and the National Open University has no entrance examination. Chengdu Open University (Chengdu Radio and TV University) was established with the approval of People's Republic of China (PRC) and the Ministry of Education. School distance education was founded in 1979, which is one of the 44 provincial radio and television universities in China.