Really. As the only professional bookstore in Zhengzhou University, Zheng Da PubMed Yubo Bookstore provides reference books for PubMed, real questions for specialized courses and internal notes for PubMed. Zheng Daquan, formerly known as Zhengzhou University, located in Zhengzhou, is a university jointly established by the Ministry of Education and the People's Government of Henan Province. It is a world-class university.