Li xi is a traditional practice in Vietnam, celebrated during the Lunar New Year, known as Tet. It involves giving lucky money, usually in red envelopes, to children and younger family members. The amount is often small, symbolizing good luck and prosperity for the coming year. The act of giving li xi is rooted in the belief that it brings blessings and wards off evil spirits. It fosters family bonds and conveys wishes for health and happiness. This custom is an important part of the festive atmosphere during Tet, reflecting the values of generosity and care within Vietnamese culture.