Upvote:1
I'm Chinese and am a Christian and I've attended many different churches and have not encountered what you described. I fairly convinced that the meal was more related to Chinese cultural practice and there isn't any theological significance that that particular meal.
Chinese children have traditionally been weaned on rice gruel (also called rice porridge, konji, congee, jook or chook), and it is to be a breakfast dish for adults. It is also served to invalids. It can be served with nothing else added to it except perhaps some soy sauce. Sometimes chicken stock or other flavouring is added. This is therefore just part of Chinese cultural practice.