In fact, to put it bluntly, the catering industry is also a waste-free industry. Although many people in the world do not have enough to eat, it is not cost-effective for people with food surplus to give them food directly, and it is impossible to solve the problem. So the catering industry, like a power plant, produces surplus resources that cannot be stored. Excess electricity is used to light street lamps all night, and excess food appears on the table of the rich, and it is thrown away after a few bites. Doing so is only a pity for people's labor, and it is emotional. Economically speaking, it is economical to stimulate consumption and use surplus grain to stimulate demand, rather than meaningless waste.