According to legend, in the Song Dynasty, there was a rich man named Zhao who claimed to be the thirteenth generation grandson. Zhao relies on his power to oppress the people and dominate one side. The gentlemen in those places don't know all the details and regard him as a relative of the country. Your sedan chair flattered him, which made Zhao stand on tiptoe and look at the sky. Zhao has an only son named Zhao Dan, who is gifted. He has been familiar with classics and history since childhood and is reasonable. Zhao Dan was only ten years old that year, and Zhao insisted on celebrating his tenth birthday, hoping to take this opportunity to make a windfall and make a fortune. Rich men and gentry from far and near all give gifts, and even ordinary people give gifts at home. There are mountains of peaches, wine and gold and silver jewelry. You see, with so many guests, how can a father break his word? All right! Zhao Dan said, please ABBA to return all the gifts. Second, please ask Dad to buy a coffin for his son at once. Zhao hypocritically said: My son's meaning is understood by my father, so forget that ominous thing! Zhao Dan said: If my father doesn't agree, my son will kneel here. Everyone was eating birthday wine when suddenly a Taoist priest with a sword came in from the outside. Look at him. He took out the large sum of money he carried with him, wrote a big birthday word on the horizontal head of the coffin next to the mourning hall, then walked into the mourning hall and swished a poem on the wall: buy a coffin for your tenth birthday and put it aside for the time being until 10 1 year old, and the coffin will open itself three times. The poet turned and left. Zhao ordered people to chase him, only to leave the city gate and disappear without a trace. They were terrified. Looks like Lv Dongbin Shi Xian! The story spread from one to two and reached the capital. Li Zong knew this and praised Zhao Dan's cleverness, saying that he was a child prodigy. Later, Zhao Dan studied hard, was admitted to fame, became a magistrate, and served as an official. He didn't die until he was one hundred years old. Anyi died in this coffin with the word "Shouzi" written on it. Everyone called it a coffin for a hundred years. Since then, people have written "longevity" or "blessing" on the banner of centenarians, and called it "longevity board", which has been passed down to this day. (Lin) according to