I want to belize,what should i do?

Since you are from China, you might have an advantage you are not aware of.

There is a large Chinese population living, working and operating business in Belize.   Over about the last decade  Chinese families have taken over the retail grocery business, as well as a major part of the distribution of food to these stores throughout the country.

Chinese cooperate with one another in a way that Belizions just don't do. As a result they control this important industry.

I have been told Chinese families usually have contacts with the equivalent of a "Godfather" in Belize City that will loan money, help them set up a store(s) and  "smooth  the immigration/citizenship" process along and otherwise help them get established.

As you speak the language, I suggest you call several larger grocery stores in the bigger cities to see if the owner can give you contact information.