It means that Confucius watched the flowing water in the river bank, so he started to sigh, feeling that time keeps passing like flowing water, and that things in life are changing rapidly. At the same time, he also advised the foundation people to stick to the "sage's way" day and night regardless of the passage of time.

at the source of the river, Confucius told himself and advised all gentlemen who were determined to start "seeing, learning and walking" and "the way of being a saint" to start from the source of "learning its way" like this river, and the later waves pushed the previous waves forward, endlessly and wave after wave.

No matter when and where, no matter whether the conditions are bad or superior, or even going through life and death, we should continue to "stick to" and "undertake" the journey of "being a sage" until we finally achieve a "world that is not satisfactory" without turning back. "

Original text:" Zi Zaichuan said: The deceased is like a husband! Don't give up day and night. "

Confucius watched the flowing water in the river on the bank, so he sighed, and time went by like flowing water, day and night.

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China's history developed to the Five Emperors' period, and the Three Yellow Dynasties passed, but in Xia, Shang and Zhou Dynasties, the Five Emperors' period passed. Confucius was born in troubled times in the Spring and Autumn Period. He wanted to see the grand occasion of the Western Zhou Dynasty, but he could not see it. He could only dream of the Duke of Zhou.

Confucius lamented by the river that all things in nature, in the world and in the universe are dead, just like the running water in the river. Once it flows away, it will not flow back.