This means that this person's eight characters have some defects: we generally know that our nature is a whole of Jin Mu's fire, water, soil and five elements. To put it simply, the five elements are mutually restrictive and interactive (if the strength of water in the five elements is small, the strength of fire will definitely increase greatly, which is called mutual restraint, because water is used to restrain fire. Once the power of water is small (judging from your child's eight characters, he lacks "earth", so when naming, you should choose a Chinese character with "earth" or "earth" to supplement and reconcile the defects of his eight characters. This is my personal suggestion. I hope I can help you! thank you