Cultural Significance: 

The so called Lucky Stars (folded paper stars, origami stars, lucky paper stars) that I was told are mainly significant to middle school and high school students, are somewhat of a ritual in this culture. These stars that are folded and hand-made (although I found some in the store that were already pre-made), are used as gifts, mostly between couples, to signify how much you love or care about someone. The amount of stars that you give someone has significance as well. If you’re not giving the stars as a gift of love, then the stars can be used to make a wish. If you make 100 or 1,000, it is said that you can make a wish on these (2). Alternately if you give someone 100 or 1,000 folded lucky stars then they are able to make a wish on the stars. This ritual of ascribing meaning to the stars, and meaning to giving them to someone brings these Lucky Stars into circulation. They are circulated between couples, and friends, and given as gifts. The simple folded paper star is given a deeper meaning, something which I doubt anyone who gives the stars as gifts fully believes in, but nonetheless wants to tell someone something with them.

Source: https://sites.google.com/site/ddmission05/home/chinese-lucky-stars