The reason for setting off fireworks in Changchun is due to traditional customs. In China, setting off fireworks is a traditional custom that has been circulating for thousands of years. It is usually held on major festivals such as Spring Festival, Lantern Festival and Mid-Autumn Festival. People think that setting off fireworks can ward off evil spirits, increase the festive atmosphere and bring good luck to people. Setting off fireworks has become a custom in Changchun. People will set off fireworks in various traditional festivals and celebrations to show their celebration and wishes. In addition, the fireworks show in Changchun is also related to the city's culture and tourism development. Fireworks display can add color and festive atmosphere to the city and attract tourists and residents to participate and enjoy it.