He has great answer for this! As he spent time addressing your question, he's still pretty interested in you. But I don't really like the way you ask him about his intention of the dinner(at home), although I can understand that as a Chinese. We're always too honest with what's in our mind. That can be a big turn off for a lot of guys as we are not so playful. Maybe some men who are looking for conservatives as a wife candidate may take it positively, but most of them will take it negativly as an intuitive reaction.
But keeping distance is very important if you want to develop a long term relationship. My boyfriend and myself went to his home on our fourth serious date (before that we had long dinner sessions in a resteraunt in each date and he always drove me home and hug a goodbye. We talked for more than three hours every day for almost a month before we crossed the line. ) But after that, he still felt bad as we had sex too early. Although after a year we're still together now --- there are a lot of challenges b/w us as he's not always sure whether I am the one. I talked with his brother about this, he blame it as we got too intimated too early. So my suggestion is that, you can be flirty, you guys can kiss and hug, but no sex. Take your time know more about each other. Remember. Early sex means suicide for relationship -- I know many people may disagree with me here but puting off the the first sex will do more good than bad to your relationship.