Dr. Li received the doctoral degree in public health from Peking University Health Science Center in 2005, and currently is a professor and doctoral supervisor of School of Kinesiology at Beijing Sport University. The research interests of Dr. Li focus on growth and development of children and adolescents, adolescent endocrine regulation, and physical activity and health promotion. She has completed more than 30 programs including the National Science and Technology Support Program, China Postdoctoral Science Foundation Program, and National Natural Science Foundation of China Program. Dr. Li has published more than 60 papers in national and international journals and several books such as “Physical Activity and Health Promotion”, and “Research Methods of Physical Activity”. The research achievements of Dr. Li have won the first prize of Provincial Science and Technology Progress Award.