What does the boy's name Chen Yuyang mean? Is it nice?

Of course. "Jade" means light, brilliance and flame. "Qi" means beautiful jade, a precious thing, with lush flowers and plants. Judging from the five elements of these words, Chen mainly belongs to earth, jade mainly belongs to fire, Yang mainly belongs to fire, and Qi tends to be gold according to beautiful jade (some soil properties are mainly metal). There is a little influence between the named five elements and the birthday five elements (note: this influence is actually very small, so don't worry too much about the problem of making up)