Literature Reference: 《赠郑尹》 —— 作者：白居易 To Zheng Yin, by Bai Juyi
郑: Toponym, also a surname.
尹: Symbolizing exceptional talent and the support of noble benefactors, it heralds a lifetime of favorable fortune and prosperous development.
Meaning: Zheng Yin signifies integrity and stability, symbolizing the honesty and responsibility of an official, expressing praise for character.