As a good-for-nothing civil servant who loves history and is full of Internet jokes, he accidentally traveled to the boyhood of Li Longji, Emperor Xuanzong of the Tang Dynasty. He has the knowledge of modern people and a smartphone whose battery is always fixed at 10%, but can search the Internet at critical times. Watch him do the most serious things in an unorthodox way. While maintaining the persona of "one emperor through the ages", he uses modern thinking and knowledge to deconstruct and reshape the Tang Dynasty, triggering a series of hilarious cultural conflicts and institutional collisions...
