How to pronounce the copula?

What is the pronunciation of the copula? xì cí.

The initials are x, c; The vowels are I, I; Read it as the fourth sound and the second sound respectively.

Cohesion is a book of the Book of Changes, which generally refers to the cohesion of the Book of Changes or the cohesion of the Book of Changes. It is the fourth edition of the Book of Changes, which generally discusses the great significance of the Book of Changes. According to legend, Confucius expounded and summarized the Book of Changes seven times, commonly known as the Book of Changes.

Cohesion is the most advanced work among these seven expositions, which quotes many Confucius' expositions, which should be sorted out by Confucianism after Confucius. It can be said that "cohesion" is the epitome of pre-Qin Confucian epistemology and methodology.

Year of creation

There are three main theories about its formation time:

(1) It was said before the Warring States Period. It is believed that the beginning of the article is "the land of heavenly glory", which was once seen in Confucius disciple Gongsun Nizi's Yue Ji, which can be proved as the early and middle period of the Warring States Period.

(2) In the late Warring States period, it was believed that this biography was written one after another, and the interpretation of divination was based on Xun and Xiang, so it came after Xun and Xiang.

③ There are other sayings, such as Zuo Shi in Qin Dynasty and Zuo Shi in Han Dynasty.