Speaking in Mandarin

I have previously been worried that my son is not competent in Mandarin as he usually speaks english to everyone.
Just about a month ago, he started speaking Mandarin to everyone! and when we replied in English, he would ask again in Mandarin and would be satisfied when we answered back in Mandarin!
He has also been taking extra classes in Mandarin (called Odanata class), dad also bought him some books to learn on Chinese writing strokes, and am glad that he is picking up well!

Kids learn fast!!! I would be learing Mandarin from him now...