I remember when I went to university in the UK the washing machines in the laundry were simple coin operated affairs. But because China has ALL THE TECHNOLOGY the washing machines here are exclusively controlled by chat-program-turned-app-platform WeChat. You are basically screwed if you don’t have a smartphone.
First you need to add the laundry service as a contact, and then find the one nearest to you
Now you can select the kind of wash cycle you want and the time you want to book the machine
Now you need to log in to the washing machine that was reserved for you on this control panel
After it’s done washing, the machine sends you a helpful reminder to go collect your laundry