I'm will be traveling with my baby. can I bring milk powder? Is there a limit to the can weight?

Of course, you can. According to the regulations, you can take 6 tins of milk powder if one is over 800 g and 24 tins if each is leaa than 800 g in weight. Anyway, you need pay 10% taxi. And the fee is CNY 200 for each kilogram if the account is over the self-use.