On the seventh day of the first lunar month, it is said that this day is the birthday of mankind, that is, the birthday of human beings. People once called this day "People's Day", "People's Day" or "People's Victory Day". Folklore experts say that as an ancient festival, "Everyone's Day" has a history of more than 2,000 years in China. People have the custom of eating seven treasures to pray for Naji and wearing people's pets. Old people have the habit of eating tofu on this day.
"Man's Day" originated from ancient creation myths and legends. In ancient times, there were no living things on the earth. At first, Nu Wa created a creature every day for seven days. Chickens, dogs, tapirs (pigs), sheep, cows and horses were born six days ago, and people did not appear until the seventh day. Later, the ancients derived other stories about the origin of human beings on this basis. In addition, there were supplementary sayings among the people, such as "the sun" on the ninth day and "the earth and the sun" on the tenth day.