○Zhang Guozhen
Taken from "The Book of Songs? King Wen": "The kingdom suppresses life and maintains the Zhou Zhen."
Zhen: pillar, pillar. It means that the child will become a male pillar in the future
○Zhang Guojun
Taken from "The Book of Songs·Jie Nanshan": "The country is balanced and the four directions are the dimension"
Jun, power
○Zhang Guochen
Chen: treasure
Guochen: the treasure of the country, a metaphor for a virtuous and talented person