The specific introduction of the two tutors is as follows. 1, Dr. Li Juan, director of preschool education department of Wenzhou University, professional director, Wen Da distinguished professor, member of Wenzhou kindergarten curriculum reform expert committee and Hulunbeier kindergarten curriculum reform expert committee. Presided over the national project 1, published monographs 1, translated books 1, and 3 textbooks. 2. Song Zhanmei, Ph.D., professor, leader of preschool education in Wenzhou University School of Education, head of master's program in preschool education, and tutor of master's students. Visiting scholar at the University of North Carolina at Chapel Hill and the State University of New York at Buffalo, USA, and head of the national virtual simulation experiment teaching project "Virtual simulation and suitability education for babies crying". Lecturer of National Excellent Resources * * * Course and National Excellent Course, core member of national undergraduate teaching team, head of preschool education and child development research center of Shandong University's humanities and social sciences research platform, won nomination award of Shandong undergraduate teaching teacher, excellent teacher, top ten teachers' morality pacesetter in Shandong University, won the first prize of Shandong Social Sciences outstanding achievement award and the first prize of Shandong Teaching Achievement Award.