【正确答案】According to traditional Chinese folk customs, elders usually give red envelopes, commonly known as "lucky money", to children during the Spring Festival to express good wishes for them and wish them good luck. Nowadays, red envelopes are not only gifts for children, but also often gifts for elders or relatives and friends. In recent years, red envelopes on WeChat have become more popular as the number of WeChat users has increased. When celebrating the Spring Festival, people often send red envelopes to each other on WeChat to express greetings. It’s certainly a convenient way to keep in touch with relatives and friends far away.