Time flies very quickly:

An inch of time is worth an inch of gold, but an inch of gold cannot buy an inch of time. I always lament that time flies by so fast. The innocent childhood days are still vivid in my mind, but in the blink of an eye, I have become a young man of fourteen or fifteen years old. Sometimes when I look at my gray-haired grandparents, I feel that one day I will grow old. But life cannot only consist of sadness, we should smile. Precisely because life is short, we should cherish every beautiful moment and every sincere touch.

Black-haired people don’t know how to study diligently early, and white-haired people regret studying late. There are only white hairs in the fair world, but no hair is spared on the heads of noble people. If a young man does not work hard, the old man will be miserable. ("Long Song Xing").

Time For military scientists, cherishing time is victory. The Red Army wanted to fly across the Jinsha River and march day and night. Its purpose was to gain time and win victory. It can be seen how important it is to cherish time, which is related to the life and death of the motherland. Tomorrow comes after tomorrow, there are so many tomorrows, I live waiting for tomorrow, everything will be wasted. - Wen Jia

Life is as fleeting as morning frost. When the time comes, the flowers are no longer sunny. Selling books has already begun, and every inch of time is worth every inch of gold. Don't say that an inch of Yin is short, it will be difficult to get it again. Don't call it a trace, it's hard to be white again. He is like a man who never gives up day and night. People with lofty ideals cherish the short days, but worry about people knowing that the nights are long. Winter is the remainder of the year, night is the remainder of the day, and rain is the remainder of the hour.

Between heaven and earth, if a white horse passes by, the prime of life will suddenly come to an end and it will never come back again. Timely encouragement should be given, time waits for no one. It is the time for men to study. Black-haired people are not diligent in studying early, white-headed people regret studying late and not working hard in youth, and old people are sad. -- "Han Yuefu" It's easy for the streamer to throw people away. The cherries are red and the bananas are green. -Jiang Jie's "A Cut of Plum Blossoms"