Tall man. Gold content is the degree of social recognition, and high gold content means high degree of social recognition. The highest is the unified recruitment education, followed by the self-study exam, the final exam, and finally the online education. Self-taught undergraduate examination is one of the basic systems of higher education in China. After passing the examination, the College of Examiners and the Higher Education Self-study Examination Committee will jointly issue the university graduation certificate, and the state will recognize the academic qualifications.