In short, Tomb Cleaning Day is the perfect time to plant trees. Some people call the Qingming Festival “Tree Planting Day. During the Qingming Festival, people fly kites both during the day and at night, but kites flying at night are special: often chains of colored lanterns are suspended under the kites, making them twinkle like stars; they are also called “magic lamps. The symbolism is to ward off ghosts and evil spirits, so in some parts of northern China, the Qingming Festival, the Zhongyuan Festival, and the Hani Festival are collectively called the “three ghost festivals.” Because tomb day is spirit day, people plant one willow tree after another during willow blossoms to drive away evil spirits. Tomb Day, Spring Festival, Dragon Boat Festival and Mid-Autumn Festival are known as the four traditional festivals in China. This is a time to recognize and celebrate the arrival of spring, and the Qingming Festival is a particularly good time to honor the rebirth of the earth and nature. On gravesweeping day, some people take a walk in the spring, some sweep graves, and some plant trees. Grave sweeping is a central part of the Qingming festival. Grave sweeping and ancestor veneration, the two main traditional customs of the festival, have been passed down in China since ancient times. Besides China, the Qingming festival is also celebrated in other parts of the world, such as Vietnam, South Korea, Malaysia and Singapore. People go to honor their ancestors on the day of burial. The Qingming Festival is dedicated to their ancestors and an expression of filial piety and affection for them. On this day, families not only literally sweep the graves of their ancestors and make ritual offerings to them, but also joyfully gather together and spend time in nature, enjoying the spring and taking the opportunity to spend time together. Sweeping graves and worshipping ancestors is a way to remember our ancestors, and these customs have a long history.