So how did the ancients order takeout at that time? They don't have mobile phones like this, but they have electronic products that can be ordered by software or telephone. There were three ways to order takeout at that time. One way is called purchasing mode: sending relatives, family members, friends or waiters to the store to buy, which is similar to the meaning of purchasing now. The other is called reservation mode: it is to make an appointment in advance for a fixed time, so that the restaurant can be delivered to home or other places, which is a bit like the current appointment. The last 1 is called group purchase mode: in some crowded public places, when the food arrives, the delivery staff of the store will come in to sell the food or ask if anyone needs the food, and then send it after statistics.
Therefore, the appearance of take-away in ancient times will become an ordinary and universal cause as it is now. No matter in ancient times or now, the essence of human beings is laziness. I think everyone's tolerance is still great for such things that make people save trouble. Even if takeout appeared in the prosperous time of the Tang Dynasty, the prosperous time of the Tang Dynasty would be even greater. But it does not rule out that there will be some dark and uneasy times. If take-away food appeared in that era, people's lives would be like dirt.