1. A trough is a rectangular vessel for holding liquid or food. The origin of this Chinese character can be traced back to ancient times. It originally refers to wooden utensils used to hold food or water. With the passage of time, the shape and use of the groove have gradually changed. Now, groove has become a very common Chinese character, which is widely used in various fields.

2. The importance of storage tank lies in that it is a device for storing or holding liquid, usually with a relatively large capacity and a relatively deep bottom. The shape and use of the trough are different in different fields, for example, in animal husbandry, the trough is usually used to feed animals; In industry, tanks are used to store liquids or carry out chemical reactions.

3. Grooves are widely used, not only in daily life, but also in industry, agriculture, architecture and other fields. For example, in industrial production, tanks are used to store liquid raw materials, semi-finished products or finished products; In agricultural production, water tanks can be used to store agricultural products such as fertilizers and pesticides. In the field of architecture, storage tanks are used to store and transport building materials such as concrete.

Matters needing attention when writing groove:

1, pay attention to the structural ratio: the groove character is a word with an upper and lower structure, and the ratio of the upper and lower parts should be about 3: 2. The wooden characters on the top are slightly narrower, and the Cao characters on the bottom are slightly wider. Don't write these two parts equally wide.

2. Pay attention to the horizontal and vertical paintings: there are many horizontal and vertical paintings in the groove characters, so pay attention to their shapes and proportions. In particular, the vertical paintings next to the wooden characters should be written straight and slightly inclined inward, not too short or too long.

3. Pay attention to the skimming and scribbling: the skimming and scribbling in the groove characters are relatively stretched, so you need to pay attention to their starting and ending positions. In particular, Cao Zili's paintings should be written flat and have a certain radian, not too straight or too oblique.

4. Pay attention to the details: there are many details in the groove characters, such as stippling beside the wooden characters and the mouth characters in Cao characters. It is necessary to pay attention to their shapes and sizes. At the same time, we should also pay attention to the center of gravity of the whole word, and don't write too obliquely or distorted.