Chinese table manner and Japanese table manner one isare difficult too. When you eat Chinese food, you shouldn’t eat all amount of the food because sometimes eating all food means the amount of the cuisinefood was too small amount and you are not satisfied with the foodportion. I think the word portion is a better fit here, However, if possible, you shouldn’t leave some any food when you eat Japanese food. By nature, it was considered that eating food iswas the important thing to survive, so still even now, eating all food of a meal is crucial manner good manners. Having said that, these days, more and more Chinese people and tourists who go to China think that people shouldn’t leave some foods, hence some restaurants allow guests to carrybring the rest homeback to their house but in Japan, usually it’s prohibited to do so because the Japanese climate is  has a  high temperature and high humidity, so foods easy to go bad easily.