French is the key
Learning French for 500 hours in China can easily reach the level of A2~B 1. Of course, the quality of teaching and learning also determines your French level.
English education
If you choose to teach in English, you only need IELTS or TOEFL scores to get a visa, and you don't need a French test. However, in order to better integrate into French life, I suggest you learn some basic French before your visa, so you can communicate simply.
You can choose French courses.
Master of French, you can take French courses! Find French difficult? Don't worry, there are English courses waiting for you to help you adapt to French university courses quickly!