The Sword Bearer of Dayu

In these rivers and lakes and temples, big people have the benefits of big people, and small people also have fun. Big people go to the emperor's palace in the morning, and go to brothels in the evening. For a small person, if he marries a wife and has children in peace, can entertain his grandchildren when he is old, and enjoy family happiness, his life can be regarded as a complete one. Who would have thought that the Yu Dynasty, which had been peaceful for hundreds of years, would fall into a situation of internal and external troubles, and at this time, the big hand of fate would grab an ordinary history teacher. But in this world, the building is about to collapse!