On the name and number of Chinese characters of the chapter of Zhong copied on silk

By putting the three parts of Yi Zhuan (Commentaries on the Book of Change) copied on silk together and certain textual research, the paper maintains that the original name of what called Yi-zhi-yi (Implications of Yi) should be Zhong (centrality or impartiality), a collection of Confucius' commentaries on Yi compiled by Confucius' disciples of later generations according to the theme of balance of Yin and Yang. The compilers considered these commentaries are the most appropriate utterance on Yi, and hence the name. And the number of characters of 2000 ought to be a mistaken number of 4000. Meanwhile, the author concluded by textual research that the first paragraph of Yao (Essentials) ought to be the 10th chapter of Xi Ci in current version.