Source: "Mencius? 6? 1 Xia's Mencius said: "Shun was born in mu, raised in the building, glued in fish and salt, raised in scholar, raised in the sea by Sun Shuai, and raised in the city by Priscilla. Therefore, the day will drop to a great post, and people must first suffer their minds, their bones and muscles, starve their bodies and skin, and do whatever they want, so they can't bear it. People are unchangeable, and then they can change. Trapped in the heart, weigh the considerations, and then make. Color label, sound hair, and then metaphor. A country, if there are no ministers and wise men who can assist the king, will often have the danger of the collapse of neighboring countries and the harm from abroad. " Then I know that I was born in sorrow and died in happiness. "