Because they only know how to eat. First of all, we need to know one thing. In the Tang Dynasty in the background of the story, there were only several cooking methods in my country: steaming, boiling, roasting and pickling. Stir-frying only appeared in the Song Dynasty when iron pots were widely used.
The Tang Dynasty is not only a peak of China's ancient culture, economic and social development, but also an era when food culture is in full bloom. Although the ingredients and operating space are limited, it is hard to beat the ancestors of the big food-eating countries, which integrated the food culture in all corners of the Eurasian continent. At that time, the most popular "barbecue banquet" in Chang' an was one of them.
if you are lucky enough to cross the Tang dynasty, don't hesitate to go to Chang' an, which is the center of the world, where all the delicious food can be tasted in that time and space!