1. The entrance examination for postgraduate entrance examination refers to the postgraduate examination conducted by some universities in the form of joint organization. Generally, more than two schools attend. 2. Unified examination refers to the national unified examination implemented by the Ministry of Education for some basic courses of network education in pilot universities of modern distance education. Since 1999 launched the modern remote pilot in colleges and universities, China's online education has flourished and the pilot scale has been expanding. However, there are also some problems in the development. In order to further strengthen the standardized management of online education, improve the social reputation of online education, ensure the quality of online education personnel training, and promote the healthy and orderly development of online education, the Ministry of Education decided to implement a national unified examination for some public basic courses for undergraduates who entered online education and open education in colleges and universities after March 2004. Passing all the unified examination subjects is one of the conditions for electronic registration of higher education diploma of the Ministry of Education. 1. The entrance examination for postgraduate entrance examination refers to the postgraduate examination conducted by some universities in the form of joint organization. Generally, more than two schools attend. 2. Unified examination refers to the national unified examination implemented by the Ministry of Education for some basic courses of network education in pilot universities of modern distance education.