Where is the shop of soup bottle chicken Lao Yu?

Deep in the mountains. The content comes from the second paragraph of an article "Chef's Calligraphy" written by writer Zhou Huacheng: I have come all the way from Beijing and must go to a small restaurant to eat a bottle of chicken soup. Lao Yu's small restaurant is deep in the mountains, on the side of the national highway, and it takes seven turns and eight turns all the way to have a meal in the small restaurant.