As the saying goes: "The grace of dripping water is rewarded by the spring." The Chinese nation has the traditional virtue of filial piety to parents, and unfilial offspring are often condemned. I especially like reading history books. I found that many emperors added the word "filial piety" before posthumous title, especially the emperors of Han Dynasty, such as Emperor Xiaowen, Emperor Xiaojing and Emperor Wudi, which reflected the important position of filial piety in ancient China. Meng Jiao wrote in Ode to a Wandering Son: "The thread in the hands of a loving mother made clothes for her wayward son. She sewed it carefully and repaired it thoroughly for fear of delaying his return home. But how much love does an inch of grass have, and it is rewarded with three spring rays? " This poem vividly describes the broadness and selflessness of maternal love, and it is difficult for parents to repay their children without asking for anything in return. During the Spring and Autumn Period, there was a small official named Uncle Ying Kao. On one occasion, he went to see Zheng Zhuanggong. Zheng Zhuanggong gave him a meal, but he put the sliced meat aside and couldn't bear to eat it. Zhuang Gong was very surprised and asked him why. Uncle Yingkao said, "My mother has never eaten anything so delicious. Please allow me to take it home to show my respect for my mother. " Zhuanggong was very moved after hearing this: a small official does not forget his mother in front of delicious food. Uncle Ying's story reminds me of some peers. Many children nowadays seldom think of their parents when they see delicious food. In personal capital, it is an "investment" for parents to give birth to us and support us, but to a great extent, parents "invest" more, and we "repay" our parents less. This is a "deficit". Since it is a "deficit", why should parents "invest"? Because this stems from parents' selfless love for their children. Faced with this selfless love, some people are indifferent. A book says: the ancients summarized filial piety to parents as three levels: "respecting parents, being humiliated and being able to support" Filial piety is the highest realm of filial piety, followed by humiliation and the lowest ability to support. Now some people can't even "support" their parents, let alone respect them. There are two kinds of such people: one is rich and powerful and forgets his roots; One kind is "young people who don't work hard", and they need support from their parents when they grow up. Filial piety to parents should not only stay in words, but also start from childhood and small things. Only in this way can we raise a clear sky for our parents when we grow up.