I Am the Vassal King in Shadow Guard

Liu Haojin, the ninth prince of the Kang Dynasty, was favored by his father since he was a child, and he was gifted with extraordinary talents. Whether it was martial arts, movement, or the rules of governing the country, he could learn them all with the help of God. Unexpectedly, there was an accident two years ago and he lost all his martial arts. He became frustrated and asked his father for the position of vassal king. He wanted to live happily for the rest of his life, but his father gave him the command of the Shadow Guard...