What are some traditional Chinese customs that are thousands of years old and remain largely unchanged?

When it comes to traditional Chinese customs that haven't changed,then we have to start with traditional Chinese holidays. The first festival, and a relatively important one, is the Spring Festival. The Spring Festival is the start of a new year, and families choose to celebrate it at home, including paying respects and giving red envelopes to children. Children should pay tribute to their elders, subordinates should pay tribute to their leaders, and during the Chinese New Year, they should meet each other from door to door and say a word first. The first thing that you need to do is to get your hands on a new one, and you'll be able to do that. When I was young, every time I went back to my grandmother's house and grandmother's house will receive the elders packet of red envelopes, red envelopes from the form of red envelopes from the packet of red envelopes to nowadays also some people directly send the red envelopes of microblogging, the form has changed, but its meaning has not changed, that the flavor of the New Year also has not changed. The second festival is the Qingming Festival. The custom of the Qingming Festival is to pay tribute to the dead. Every year, many people go to mausoleums to sweep tombs and remember their ancestors. It is likewise a way of expressing culture, and because it is linked to the festival, Qingming is also a good day for trekking excursions, also known as spring trekking. The third festival is the Mid-Autumn Festival, when mooncakes are eaten. The Mid-Autumn Festival is also known as the Reunion Festival and the Moon Festival. Every year on the 15th day of the 8th month, the family reunion, eating a variety of unique flavors, sweet and delicious mooncakes, look up to see the 15th day of the first month of the bright and full moon, and the hands of the mooncakes against the backdrop of the joy of it. The loved ones who can't be reunited can also miss each other who can't see each other by enjoying the moon, as the poem says? As the poem says, "The moon rises in the sea, the sky is the limit at this time". The fourth festival is the Dragon Boat Festival, Duanwu Festival, also known as the Dragon Boat Festival and the day in the festival , a lot of Chinese customs are connected to eat together, the Dragon Boat Festival is no exception, every year the Dragon Boat Festival, door-to-door will be wrapped in rice dumplings, rice dumplings, rice dumplings, rice dumplings, sweet rice dumplings and salty rice dumplings , each with their own flavors. China has thousands of years of cultural heritage, there are also many cultural practices, we need to protect the cultural heritage, so that they are passed on from generation to generation.