Traveling to Another World to Become a Royal Younger Brother

The social beast Li Yun traveled to a different world and became the vassal king of the Tang Dynasty. He was the emperor's only younger brother. A female assassin from a neighboring country failed to assassinate the emperor and was sent to the Jiaofang Division. Li Yun happened to find out and redeemed her. Who knew that the female assassin's name was Chanyi, and she was the princess of the former emperor of Qi State in Linguo. After her father was murdered by the minister, the minister usurped the throne. The assassination of the Tang Emperor was to make the two countries war, and then find an opportunity to regain power and kill the enemy. However... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.