Traditionally, red envelopes are passed out during the Chinese New Year's celebrations, from married couples or the elderly to unmarried juniors. It is common for adults to give red packets to children.
The red envelopes always contain money, usually varying from a couple of dollars to several hundred. The amount of money in the red packets should be of even numbers, as odd numbers are associated with cash given during funerals. Since the number 4 is considered bad luck, money in the red envelopes never adds up to $4. However, the number 6 is considered lucky, and $6 is commonly found in the red envelopes.