The Legend of the King of Zhenbei

There is a group of great Confucians in the imperial court who educate the world with benevolence, justice, etiquette and wisdom. Suddenly one day, a group of people came from the north and split this prosperous age with steel knives. So there was an extra pass in the north, and there was a courtyard inside the pass, with small bridges and flowing water and people living in the courtyard. There is a game of chess pieces in the imperial city of Shangjing, and there are people holding the pieces to tell the difference between right and wrong.