It means that time is very short for us in life, but time is like the scarce water of a sponge, but as long as we squeeze hard, water will still be squeezed out. Just like time, as long as we seize every minute, time will not be so short.

this sentence was said by Mr. Lu Xun. Maybe I often feel time is tight, and I have no time to do many important things at all. In fact, this is just an excuse.

Dong Yu in the Three Kingdoms period was a very learned man, and many people went to him to study, but he demanded that he should first "read the book a hundred times and see his own meaning". When the scholar complained that he didn't have time, he replied, "When the winter is over, the night is over, and the rain is over, it's sunny." The use of this "three surplus" is precisely the accumulation of piecemeal time. It is the uniqueness of time to be able to accumulate a large sum with a small sum.

Expanding materials:

If you want to achieve something, you must learn to use your time. There is such a metaphor: time is like water droplets, which are dispersed and can evaporate and become smoke to float away; Together, it can become a stream and a river.

and one of the methods of this concentration is to learn the whole thing in piecemeal time, so as to accumulate bit by bit and improve the system. There is no "shortcut" to acquire profound knowledge. You can only realize your dream by accumulating it bit by bit.