What does it mean to sell beer in Zhou Zhiruo and Qingdao?

Ordinary and mediocre career. "Zhou Zhiruo rotten pants stall, Qingdao beer seller" is an online buzzword, which originated from a plot in the TV series "Eternal Dragon Slayer". Zhou Zhiruo wore a long blue dress in the play, but because of the violent action, the skirt hem was worn out, revealing the crotch, which was called "rotten pants stall" by the audience. "Tsingtao Beer Salesman" refers to an ordinary and mediocre occupation, which is in sharp contrast with Zhou Zhiruo's identity. Qingdao generally refers to Qingdao. Qingdao, a prefecture-level city under the jurisdiction of Shandong Province, is also called Island City and Jiaoao, a sub-provincial city, a city with separate plans and a megacity.