The Chinese food that you have mentioned is not very healthy due to the high sodium content and maida. However if consumed once in a while it will not impact breast milk. Breast milk nutrients do not depend on immediate consumption of food but over all life style. A lot of the breast feeding foundation is laid during pregnancy so over all healthy lifestyle is important for optimum breast milk production.

I think it probably has things that you'd want to avoid if possible, like msg and artificial colours and preservatives, but one meal isn't going to do any harm, and I'm sure there are BF moms that have had terrible diets all-around and still grew healthy, happy babies.I had chinese food and it didn't harm my little guy at all. The most it will do is make him a little gassy if you had peppers.

I too had the 2nd questn..