1, originally refers to Kuang Heng in the Western Han Dynasty who chiseled through the wall to attract his neighbors to read by candlelight, from which we can think of rats, because rats also steal some food through caves, which is similar to this. Therefore, I can guess that it is a mouse by digging the wall and playing a zodiac.

2. From the interpretation of "poor family and hard study", it is very similar to cattle. In ancient times, "hanging books on the horns" also meant studying very hard. Therefore, it can be guessed that it is a cow to play a zodiac.

3. Digging through the wall to borrow light is an idiom in Chinese, which is listed in Volume II of Miscellanies of Xijing written by Han and Liu Xin. This idiom originally refers to that Kuang Heng in the Western Han Dynasty dug through the wall to attract his neighbors to study by candlelight, and later used to describe things that his family was poor and studied hard. Its structure is continuous, and it can be used as predicate, attribute and adverbial in sentences, with commendatory meanings.

4. The origin of the idiom, Kuang Heng, is childish. He studies hard without candles, and his neighbor has candles but fails to catch them. Balance is to draw its light through the wall and read it with a book reflecting the light. Later generations refined the idiom "digging a wall to borrow light".

5. Idioms imply that Kuang Heng works for others in order to study, and at night, even if there is a glimmer of light, he should study hard. This attitude and hard work made Kuang Heng a great scholar. Sometimes, external conditions restrict the progress of many people, but people with a will will create opportunities for themselves to advance. Hardship is only a temporary experience, and the knowledge gained after experiencing these hardships is the precious and long-term wealth of life.