A strategic approach to life. Language originated from the book Le Gan Tan written by Hong Yingming, a hermit in Ming Dynasty. Shi Hong said: "People in the mountains are poor and carefree, while people in the fields are simple and naive. If you lose your virginity, it will be clear if you don't turn over the ravine. " That is to say, people who live in seclusion under the nymphs of Shan Ye are poor in material life, but rich in spiritual life. People who work in agriculture and industry have simple knowledge, but they have a simple and true nature. If you return to the city and become a profiteer full of philistinism, you might as well die in the middle of nowhere with an innocent reputation and bones. In history, many loyal ministers and righteous men would rather die for their country than surrender to survive in the case of national destruction and death. In his poem Crossing Zero and Ding Yang, Wen Tianxiang wrote a famous sentence, "Who has never died since ancient times, keep a fresh heart to shine on history".