McDonald's in Beijing usually requires working hours of not less than 4 hours. If you catch up with weekends or holidays, you will sometimes work overtime, but students will go according to your time.
McDonald's in Beijing 7.8 yuan every hour.
Doing more exercise in the student stage is very beneficial to entering the society in the future, but it will be hard to work at McDonald's or KFC at first, so just stick to it.
I hope my answer can help you _!