I have heard Mandarin is a difficult language as compared to say, French, German or Spanish etc. I suggest if you do not know the language either you can hire a tutor or assuming that your kid must be a beginner, so you can also learn with him. See yourself, too, be a student as him and for guidance, you can check with his teacher at school, if they provide fliers, or guide books to learn the language, or take personal classes. Nowadays a lot of information is available on the Internet. Take it as an opportunity for yourself also to learn the language.
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