Kingdom, reason:
King, monarch, take national character.
Wang is the statue of the Ninth Five-Year Plan, so he chose this word.
In addition,
If you are selfish, your country will survive. Will you avoid it because of misfortune? -[Qing] Lin Zexu
Article, Great National Cause, Immortal Event-[Romance of the Three Kingdoms] Cao Pi
Note that both famous poems have harmony between countries, so it will be more convenient for children to introduce names in the future, and the rate of duplicate names is relatively low.