After returning to China, Dr. Yan formed the research team in Huayu Education Technology Co., Ltd. and carried out the design-based education research on discipline – specific activities in the smart learning environment. During the postdoctoral period in Beijing Normal University, Dr. Yan participated in multi-level education research projects from micro to macro, and led the research team to conduct systematic research and extensive research on science education and scientific literacy in K-12 stage in China.