Most Japanese girls I have met want to keep the initial dates even. If a girl allows a man to pay too much more than her, she builds a kind of honor debt to that person. Guys love to take advantage of this at the end of the date... "Wait, I paid for everything and you won't let me come to your apartment?"
Chinese girls would just tell you thanks for the food, drink and fun, now go take a hike. But Chinese girls are turned on by money. Japanese girls are turned on by obligation. (These are general statements and have no more basis than my own meandering experience.)