An Er does not forget Wei, and Wang Zhi does not forget the Internet.

From the copula, the original sentence is: a gentleman is safe without forgetting danger, keeps without forgetting death, and manages without forgetting chaos, which means protecting his own country. A gentleman's stability does not forget possible dangers, while life does not forget the possibility of extinction and the way of governing the country.

Cohesion generally refers to the Book of Changes and the Biography of Cohesion or the Book of Changes and Cohesion. Also known as Cohesive Biography, it is divided into two parts. Ouyang Xiu suspected that the following works were not written by Confucius, and still believed that Biography of Zhuan Xu and Biography of Xiang were written by Confucius. Obviously, he attributed the most important thought in Yi Zhuan to Confucius.

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.