We're not great in Chinese so at 10 months we put our child in Chinese playgroup- learn more about Chinese, get exposure in a fun way.
I also tried Julia gabriel English trial lessons when he was 1.5years but for that, we felt not much point to put him in because he gets English exposure at home.
Actually when kids are so young they can't play together... normally kids only start to play with other kids at about 3.
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