What do you mean by "dirty"

And "low income" refers to: teachers, officials, scales, matchmakers, pawns, demons, thieves, high platforms, flute playing, circus, pushers, pools, back rubbing, repairs, matches, prostitutes, dog beating, pedicures, haircuts, vegetable lifting, tailors, actors, drummers and wizards.

In ancient times, social strata were divided into nine grades according to the level of nobility and inferiority. Later, with the complexity of social division of labor, the saying of "upper nine streams, middle nine streams and lower nine streams" was derived. It should be noted that this method of dividing people is the dregs of feudal thought, even in ancient times, it was only a universal culture and was not respected by the mainstream literati class.

Basically, it can be summarized as: first-class actor, second-rate pusher, third-rate tortoise, fourth-rate tortoise, five scraping, six rubbing, seven prostitutes, eight thieves and nine blowing.

Shangjiuliu: First-rate Buddha (Sakyamuni), second-rate immortal (Yuanshi Tianzun, Taishang Laojun, Eight Immortals, etc. ), the third-rate emperor (the real dragon emperor and feudal emperor), the fourth-rate official (the big and small official), the fifth-rate cooking pot (the winery, once the biggest manufacturer in feudal times), the sixth-rate pawn (the pawn shop), the seven merchants (the merchants), the eight guests (the manor owner) and the nine Zhuang fields. This statement seems to be influenced by Taoist pastoral taste)

Zhong Jiuliu: First-class doctor (doctor, doctor, pharmacist), third-class feng shui (Mr. Feng Shui, yin and yang teacher), fourth-class batch (batch of eight characters, fortune telling), fifth-class painter (calligraphy and painting), sixth-class physiognomy (physiognomy, fortune telling), seven monks (monks) and eight Taoist priests (guqin chess).

Xia Jiuliu: First-rate wizards (southern wizards who draw spells to attract gods to exorcise ghosts), second-rate prostitutes (prostitutes in secret), third-rate gods (wizards possessed by immortals who treat diseases in the form of dancing), fourth-rate bangzi (night watchman), fifth-rate hairdressers (barbers who carry burdens everywhere), sixth-rate trumpeters (trumpeters), and seventh-rate performers (each)

Of course, literally, the combination of the three "nine streams" of the upper, middle and lower levels is 3977. In fact, even the seventy-two streams are included, because the name of each first-class industry includes many occupations of peers or similar peers, such as "haircut" of the ninth stream and the fifth stream, as well as pedicure, running errands, pulling carts, massage, shop assistants, dancers and helping others.