“Funeral ceremony is greatly emphasized by the Book of Rites and represents the core of Confucian spirits,” quoted from the Essentials for Studying the Classics (讀經示要) by Xiong Shi-li (熊十力) . For the Mohist School, which hurled the first criticism on Confucianism, the most criticized part is ironically the most valued part of Confucianism. The criticism is so harsh as the Mohists remark that Confucian Lavish Burial and Long Mourning (厚葬久喪) would literally bury the country. In many discourses which expound on the meanings of rituals and justice (禮義), the Confucian scholars reiterate that the fundamental spirit of the funeral rituals is an expression of sadness and sorrow of the alive for the dead. However, if it is a beautiful humanistic idea containing a profound meaning of respecting and remembering the origin, why is the spirit severely criticized? Discussions of the Confucian and Mohist schools on funeral rituals were based on contemporary facts of funeral ceremony. In the view to fully understand what the Confucian school thinks of funeral ceremony and why the Confucian concept of funeral ceremony was being criticized, this paper traces back to the origin. Related chapters of Yili and the Book of Rites are plowed through to give a clear picture of the Confucian concepts of funeral rituals and their practical performance at that time; furthermore, contemporary documented funeral facts are compared with archeological data being observed to investigate the truth of Lavish Burial and Long Mourning.