Breakfast vendor He Zhengshan raised his prices due to rising ingredient costs. Sticking to his bottom line of using good fresh meat and discarding leftovers on the same day, he was squeezed out by price-greedy customers and managers, and was forced to move away from the school gate stall. He moved to set up a stall in the logistics park, and relying on solid, good tastes, he won the recognition of a group of diners such as freight drivers. On the other side, a competing vendor who used low-price gimmicks used spoiled, repeatedly thawed ingredients, triggering a collective student food poisoning incident. After the outbreak, everyone woke up with a start, and the school came to the door to implore He Zhengshan to return and reorganize the breakfast street. He Zhengshan set transparent and public business rules, did not expand blindly, stuck to his original intention, and finally the reputation of his pan-fried buns spread all over the country.