Zhu Xi's Remark of Mingde has a great influence on the later generation Confucians, and Zhu Zi's understanding of Remark of Mingde refers to the Xin or the Xing. There are different opinions on Zhu Xi's discussion, which also leads to the debate of the later generation Confucians. This paper discusses the relevant interpretations of contemporary Mr. Mou Zongsan, and compares it with the argument that Mingde is Xin or Li(principle) in the late Chosan dynasty, and expresses the different types of understanding of Remark of Mingde annotation. I hope that through the above discussion, I can prove my understanding of Zhu Xi's Remark of Mingde's original intention.