Where can middle school students do part-time jobs in Xi 'an?

Supermarkets, now many supermarkets make drinks or promote some new products on Saturday and Sunday. You can contact them through some intermediary companies. And if you are a girl, your height and appearance can meet the requirements. You can also ask in a photo studio like the bell tower, and you can be a window model or something. Anyway, it's a rest day, so you can earn some money and spend more or less.