cooperate with bookstores, gymnasiums, beauty salons and other businesses. After the outbreak, horizontal alliances became the best means for many businesses to help themselves. The partners jump out of the pan-catering industry and cooperate with bookstores, gymnasiums, beauty salons and other types of businesses to expand the marketing scope and gather a large number of customers. "horizontal alliances" means that different businesses achieve a win-win situation through traffic exchange. For example, the hot pot restaurant puts the gift coupons in the barber shop next door, and the barber shop puts the discount coupons in the hot pot restaurant. These two companies are not competitive, but there are overlapping consumer groups, so they can exchange traffic.