China has a long history of foreign trade. As early as the pre-Qin period, the ancient Chinese shipped silk and other goods abroad; in the 2nd century BC, the Land and Maritime Silk Roads developed during the reign of Emperor Wudi of the Western Han Dynasty connected China with the rest of the world.Trade relations between China and other regions in the world have been developing gradually and continuously. Trade has contributed to the deepening economic and cultural exchanges betw...

This book, drawing from internationally renowned scales like Bayley and Gesell, develops a child developmental assessment scale based on research data from Chinese children. It stands as a meticulous creation of the Capital Institute of Pediatrics, a national-level institution for children’s development research in China. The scale demonstrates good reliability and validity, meeting psychometric standards in various statistical aspects. In the revised scale, developmental quotients are cla...