Yu State, in a country called Luyeqiu, also implemented a hereditary system. Officials also had the Four Books and Five Classics. They passed examinations and the national style was open and the men were free.
A boy whose parents both died died unexpectedly during field survival training after being admitted to the military academy he desired. He traveled to the Yu Kingdom and fell into entanglement with the royal family. He cleverly deceived and deceived the powerful royal family.