Among them, "the master of the sun, the moon and the sky" refers to the stem and branch on the day of a person's birth, which is one of the eight characters. "Born in summer" means that this person was born in summer. "There must be gold to help" means that if he wants to make his destiny better, he needs the help of metal elements. "Avoid too much wood" means that too many wood elements will have a bad influence on his fate.
This statement is mainly based on the five elements theory, that is, everything in the world is composed of five elements: gold, wood, water, fire and earth, and the combination of different elements will form different results. Therefore, according to this theory, if a person's sun and sky are water, then he needs metal elements to help him when he is born in summer, and he should avoid too much wood.