No Oh, now are not allowed to dine-in, and take home to eat safer.
The dangdang food means that it can only be consumed in the store, and can not be taken away or sold out. And inside the meal is usually more specials, discount dishes, profit price is not high, will not be able to take away such a rule.
The name "dangshi" (堂食) originated from the meals prepared for the prime minister during the Tang Dynasty. From Li Zhao, Tang Dynasty, "Supplement to the History of the Tang Dynasty," Volume 2: "After each meeting of the dynasty, the prime ministers and bureaucrats would eat in the hall." Translation: After every court meeting, all civil and military officials would eat together. In modern times, it means that the food can only be consumed in the store, and cannot be taken away or sold out. The ban on dangdang is the opposite meaning can only be packaged or takeaway.
The dangdian is more interesting than the takeaway store, as it is a free place to use, where people can have all sorts of gatherings, and free tools such as projectors and blackboards will be provided. In other words, the dine-in area of a traditional dine-in store will be a free, public service area, like the public **** area of a shopping mall. Behind this consolidation will be people with production skills to become the most specialized producers.
The cafeteria is the same as the restaurant is, is generally a school or other units within the place provided to people to eat, is available to pack takeaway, so the biggest difference between the cafeteria and dine-in is that one is the venue for eating, one is the form of eating.