In order to promote the national key research and developmentproject "Chinese population assisted reproductive population and offspringcohort establishment and application basic research" project, Yuan Lin, JiangboDu and Shiyao Tao went to the third affiliate of Zhengzhou University for supervisionon September 9-10, 2020. A two-day special supervision work was carried out onthe implementation of the birth cohort. The project team communicated with thecohort leader of the Third Affiliated Hospital of Zhengzhou University to discussethe progress of the inclusion and follow-up of the main cohort, export andintegration of subsequent hospital databases, and the follow-up of offspring.This exchange further strengthened the communication with the Third AffiliatedHospital of Zhengzhou University and greatly promoted the smooth completion ofthe overall objectives of the project.