After completing the credits, the standard academic system for doctors is three years, and all credits are completed within the specified time. You can only graduate through defense. Published more than two papers in core journals as the first author, with no record of academic misconduct. Publishing a paper needs to ensure that the paper is scientific and reliable and cannot be faked. Yunnan University, referred to as Dayun for short, located in Kunming, is a national key university jointly established by the Ministry of Education and Yunnan Province.