How about Montreal, Canada? Grade three and grade one are going to study abroad. Is it too early? What are the advantages and disadvantages of studying there?

Montreal is located in the French-speaking area, so most high schools and some universities should teach in French, and some schools may teach in English. All the locals can speak French, but the city is quite international, so everyone in the shop can speak English. If you don't learn French, life will be good, but it will be more difficult to integrate into society and the schools you can go to will be greatly restricted.

There is a small Chinatown with only one street in Montreal, where most of China's daily necessities are sold.