Yangchun Baixue: It originally refers to a higher-level song of Chu State during the Warring States Period, which was mainly sung by the court and rarely seen by ordinary people. So it is used as a metaphor for abstruse and outdated literature and art. Now it has also been extended to something elegant.

Xialiba people: It is also a Chu song, but it is mainly popular among the people. So what is used to describe popular literature and art is now extended to popular and popular things.

Extended data:

The allusion of "Chun Xue" comes from Song Yu's answer to the king of Chu in Songs of Chu.

King Xiang of Chu asked Song Yu: What are the hidden virtues of Sir? Why doesn't anyone praise you so much?

Song Yu said: There are singers in Chu State, and the earliest one is "The Lower Liba People", and there are thousands of peacemakers in Qian Qian. When the singer sang Yang A Xielu, there were only a few hundred middle school peacemakers. When the singer sang Chun Xue, there were only a few dozen middle school peacemakers. Its conclusion is that "its music is high and few." The more elegant and complicated songs like Yangchun Baixue are, the fewer people can sing, that is, the songs are sung less.