When Yun Chen woke up, he unexpectedly traveled to the eve of the Great Yao Dynasty's unification of the six kingdoms. What was even more unlucky was that he had a natural tendency to speak his mind out loud, and the slanderous words in his heart that he did not even dare to say out loud were all clearly heard by the ambitious and thoughtful Emperor Dayao. On one side, Yun Chen tried his best to hide his clumsiness and racked his brains to cover his "mouth", for fear of losing his head if he said the wrong thing; on the other side, the emperor pressed forward step by step, testing with great interest, determined to find out this weirdo who "hides everything in his belly". One person and one king begin the daily life of wits and courage that makes people laugh and cry.