What are the long-standing traditional customs in Qingming?

Xuzhou people say that this is equivalent to giving gifts to relatives through the post office, because they are busy with work and have no time to visit in person. Before arriving in Tomb-Sweeping Day, no matter how busy you are at work and how many things you have to do, you should choose a day when the whole family will be together, bring tributes, paper money and flowers, and add soil to the graves of relatives to worship. Xuzhou people say that this is to personally bring gifts and cash to visit their deceased relatives and clean up the house for their loved ones. Besides offering sacrifices, there are two customs, inserting willows and eating boiled eggs. Inserting willow is to break off the branches of willow, tie them up or insert them on both sides of your door.