Datang: I Opened a Restaurant in Chang'an

Chen Xiao traveled through the early years of Zhenguan in the Tang Dynasty and inherited his family's restaurant in East City, Chang'an. Unexpectedly, Emperor Tang Li Shimin changed his name to Brother Li and became a frequent visitor to the restaurant. While pushing cups and changing cups, Li Shimin's questions became more and more strange: "Shopkeeper Chen, the Turks have repeatedly gone south to plunder, is there a permanent solution?" "Shopkeeper Chen, the locust plague is devastating the world, how should the court respond?" "Shopkeeper Chen, the world is so big, how can I, the Tang cavalry, dominate the world?" Chen Xiao has a headache. I just opened a restaurant, and you always ask me what I am doing? The key is, how come the Tang cavalry really dominates the world?