No, according to the query of official website of Peking University, Ding Runyang was still a student of Peking University as of June 6, 2023 and did not drop out. Peking University, abbreviated as "Peking University", is a national key university directly under the Ministry of Education of People's Republic of China (PRC). The school ranks among the national "double first-class", "2 1 1 Project" and "985 Project", and is selected as the "Independent Auditing Unit for Degree Authorization".