In America, parents always remind their kids to "keep your mouth closed when you eat" or "don't talk with your mouth full". It is seen as terrible manners to make noise when you eat or show the food in your mouth when you talk. Generally in China, it is no problem at all if one makes noise at the dinner table or carries on conversations with food in one's mouth. It may be disgusting to you, but to Chinese it is just a part of their happy life.
All this to say...
... my daughter is VERY happy!