Four mountains come to the mountains, which means that the field consists of four pairs of mountains, which are divided into upper and lower sides.

Four rivers come from Sichuan to Sichuan, that is to say, the field consists of four rivers, which are divided into upper and lower sides.

The four-day series means that the field consists of four days, divided into two days from top to bottom and two days from left to right.

These four words are closely connected, that is to say, this field consists of four ports: upper left, lower left, upper right and lower right.

"Tian" is a Chinese character, which is pronounced as "Tian" and is a hieroglyphic. Xiao Zhuan thinks it is like a farmland with criss-crossing buildings or ditches.

"Tian" is the radical of Chinese characters, and the characters from "Tian" are mostly related to hunting and farming.

Original meaning: farming is "tenancy".

In ancient times, the words "Chen" and "Tian" were interchangeable, because the original meaning of "Tian" was "clod", and the grain planted on it was arranged neatly, like soldiers. In ancient times, Chen Yi's ci was also used as "array".

Because ancient military formations were generally square.

If the formation of the army is compared to a square field and the soldiers in the formation are compared to whole grains, then "Chen" and "array" are interlinked.

The pronunciation of "Chen" in Putonghua is quite different from the ancient sound of "Chen" in Chinese. It is worth noting that in Fujian dialects, such as Putian dialect, Minnan dialect, Fuzhou dialect and Chaozhou dialect in Guangdong, Chen's ancient sound is still preserved.

Chen wrote a lot of words in the pre-Qin period. See bronze inscriptions in the Spring and Autumn Period and the Warring States Period, such as Cup, Chen Dun, Purple Pot and Chen Zun.

Baidu Encyclopedia _ Tian