5 glass balls symbolize 5 different relationships. Yuan is a Buddhist-related Chinese concept that means the predetermined principle that dictates a person's relationships and encounters such as the affinity among friends or lovers. It can be defined as the "binding force" that links two persons together in any relationship.
(The text is provided by the student)緣起 所以相識相知相愛相聚 緣滅 所以冷待冷視冷漠冷落