You don't have to give it to your boyfriend when he comes home, but you can give him a red envelope if he gets married. Traditional red envelopes, also called lucky money, are money wrapped in red paper by elders for children during the Lunar New Year. It is said that during the Ming and Qing Dynasties, most lucky money was given to children with red ropes. After the Republic of China, it was wrapped in red paper. Generally, it refers to a red paper bag wrapped with money, which is used as a gift when celebrating, and also refers to bribing others' money. In Cantonese-speaking area of China, red envelopes are called "giving profits", which are gifts made by putting money in red envelopes.