It's just a pre-sale. Pre-sale means that I want you to buy it first, which means that I will tell you that this thing is for sale first. When it's time to sell, just sell it normally. So many goods in Aauto faster are pre-sold, because he is pre-sold, which means he is ready to sell.
Because pre-sale means that the products are not ready yet, the anchor in the live broadcast room will pre-sell how many products according to the live broadcast, that is, how many orders the fans have placed, and then go to the factory to make the same number of products, and then send them to the fans who placed the orders. It is more appropriate for fans to order as much as they want, but if they do too much, they will suffer economic losses. Therefore, the live broadcast rooms are all pre-sold, and there is no loss.