The fragment written above is not a famous sentence by Wu Yunduo, but a passage by Paul Kochakin, the hero of How Steel is Tempered: The most precious thing for a person is life, and life is only once for a person. Therefore, one's life should be spent in this way: when one looks back on the past, he will not regret wasting his time, nor will he be ashamed of doing nothing; In this way, when he died, he could say that I devoted my whole life and all my energy to the most precious cause in life-the struggle for the liberation of mankind.

Wu Yunduo's similar famous saying is: "How should youth be spent? Some are like fire, shining on others forever. Some are like fluorescence, and they can't even shine on themselves! Different life ideals and attitudes determine a person's position in the battle. “