Song of Dawn and Dusk

An ordinary student in the new century travels between the two Song dynasties while chatting and laughing. Will you perish in troubled times, or grow in adversity? Yi An said: "When I rule the world, I will allow you to be at home all over the world." (The introduction of Xianqi Yidian is in the related work, and I have personally tested that non-toxic food and grass are edible)