What is a dirty advertising song?

In ancient times, there were three religions and nine streams, among which the second stream can be used as folk songs: "First-class actors, second-rate pushers, third-rate turtles, fourth-rate turtles, five shaves, six rubs, seven prostitutes and eight thieves, and nine blows".

Department:

In ancient China, there were nine occupations. More complicated are the upper nine streams, the middle nine streams and the lower nine streams.

Ancient folks divided Jianghu people into upper and lower classes;

Shangjiuliu: Monks, Taoists, Painters, Practitioners, Mr. Feng Shui, fortune tellers, chefs, private school teachers and pharmacies.

Dirty people: actresses, maids, prostitutes, beggars, thugs, hairdressers, pawnbrokers, bathhouses and carpenters.

The reason why the first nine kinds of people enter the upper class seems to lie not in how noble their status is, but in their frequent contact with the upper class and a little light.