With "If you don't practice for one day, your skills will be slow; if you don't practice for two days, your kungfu will be halved; if you don't practice for three days, you will become a layman." Famous aphorisms with similar meanings.

One: Don’t think about speaking for three days, and don’t do manual work for three days.

Two: If young people don’t work hard, old people will be sad.

Three: The song never leaves the mouth, and the punch never leaves the hand.

One: Don’t read orally for three days, and don’t do anything with hands for three days: For scholars, it means that books should be reviewed frequently. The second sentence is for craftsmen. If you put down your skills for a period of time, you will become unfamiliar and will not be able to do it smoothly. The meaning of the main sentence is to review the past and learn the new.

Two: If young people don’t work hard, old people will be sad. As the saying goes, if you don’t work hard when you are young and strong, there will be no use in being sad when you are old. Source: "Collection of Yuefu Poems·Chang Ge Xing": "When hundreds of rivers reach the sea from the east to the sea, when will they return to the west? If young people don't work hard, old people will be sad." Yuefu of the Han Dynasty, Han Dynasty.

Three: The song never leaves the mouth and the fist never leaves the hand comes from "The Point of the Knife". The meaning is that those who sing should always sing, and those who practice martial arts should practice often. It is a metaphor that only by studying hard and practicing hard can one become proficient in Kung Fu.