Longdong College. According to the information of Education Network, Longdong University is a public university and Lanzhou University of Technology is a private university. Relatively speaking, Longdong College may be good. After all, it is a professional college with advantages in all aspects and professional teachers. Longdong College is a full-time undergraduate college jointly established by Gansu Provincial Government and Qingyang City. It is a cooperative college between Lanzhou University and East China Normal University, and has established inter-school cooperation and exchange relations with 13 universities such as northern arizona university, Humboldt State University and Mansfield University.