All societies have certain colors associated with life, death, sadness, illness or joy. The Chinese are essentially a society symbolist so they believe that life can be pushed one way or the other with the help of certain symbols and colors. The Chinese never miss an opportunity to seek and achieve happiness and for that they use symbols, whether at a wedding, at a birth, at a holiday or any other event.
The Chinese like to give something that brings happiness to the lives of the people who receive it. Thus, the red wrapper is the most popular of all Chinese symbols. For centuries it has been believed that wrapping gifts in something red brings the happiness, good luck and prosperity. So the giver wishes all that to the one who receives the gift. Another common custom is to place two coins inside a red envelope and place it in the doorway of the house. They say that brings prosperity too. These red wrappers are also very present in the relationship between the teacher and the student in Feng Shui: for each teaching the student must give a red envelope to his teacher. Empty, although custom indicates that they always have something.
Well, if you want to feel a little Chinese from now on, buy a lot of red envelopes, do the coin thing and wrap all the gifts for your friends and family with red paper. In addition to the gift itself, you will be wishing everyone happiness, good luck and prosperity.