Source: no source, the combination of nine and yue.
Interpretation: Nine is a Chinese character, pronounced auspicious incarnation, which means light black stone like jade.
Feng Wei's papaya poem in the Spring and Autumn Period (without author): "Reward it with Joan wine." According to records, Joan Jiu means nine here, which means "nine". ?
In ancient legends, Yue is a pearl given by heaven to a wise emperor.
Qiu Yong and Chen Pengnian in the Northern Song Dynasty compiled Guang Yun Jiyun: Fish and Moon (yuè). Divine beads are also (meaning, pronounced "moon", they are divine beads).
According to legend, when Shao Hao was born, a colorful phoenix led hundreds of birds to gather in front of the court, and the phoenix was thrown into the hands of Shao Hao.
Therefore, it can be understood that no matter how beautiful the jade-like beads are, even if they are light black and inconspicuous, they will still be found, which means that gold will always shine.
Extended data
The Origin of September and Shan Hai Jing
September in Shan Hai Jing is like this. One day, the earth suddenly shook, and the poor mulberry fell to the ground. The stone cracked and a radiant bead appeared. Everyone is overjoyed, which is a symbol of good luck. Taibai Venus is named Yue because its pearls are as bright as the bright moon, and it is also a gift from the king. It will be named "Home of Phoenix Birds".
Baidu Encyclopedia-Nine
Baidu Encyclopedia-Yue