[Hankou Laotongcheng + Hankou in the late Qing Dynasty + Survival in Troubled Times + Wuhan Food] "Laotongcheng" was founded in 1931. It is famous for its three-fresh bean curd snacks and is known as the "Bean Curd King". He was praised by Chairman Mao Zedong many times. The first part of the trilogy "The Zeng Family's Entrepreneurship in Old Tongcheng, Hankou" reproduces the experience of the Zeng family operating a restaurant and snack bar in Hankou from the 1930s to the 1950s. The Zeng family gradually grew from a farmer from the countryside of Hanyang to a nationally famous "Bean King". On the one hand, the novel shows the customs of Hankou at that time, and on the other hand, it also shows the life scenes of the working people living at the bottom of society.