Zhu Xi 朱熹 made the greatest contribution to the upgrading of the historical status of Zengzi 曾子. He systematically argued for the status of Zengzi’s position in Confucian orthodox， believing that in addition to the “Sixteen-Character Heart Method”， the transmission of the orthodox between Confucius and Zengzi as“consistency of loyalty and forgiveness”had a substantial impact. In his field of vision， Zengzi’s qualities of being “reckless” and “resolute”actually encompass benevolence， righteousness， courtesy and wisdom， and his filial piety is also “great”. Zhu Xi’s discussion of Zengzi was mainly aimed at establishing his image as a sage and his position in the Confucian orthodox. Overall， a zixue 子学 in Zhu Xi’s Neo-Confucianism is desirable but has been largely overlooked in academia. The construction of this zhuzi system stems from the interaction between Confucian classics， zixue， history and philosophy， with a fundamental purpose to maintain the Confucian tradition of orthodox system， governance system and academic system.