"Dragon Sword" is a creative martial arts drama, composed of three independent stories in series, describing the growth process of the protagonist Rong Ziyun, with many characters, rich plots, and endless martial arts moves.　　Miao Qiaowei plays the role of Rong Ziyun, the castle owner of Taoyuan Fort. His favorite cousin and the daughter of his second favorite rival both died for him. Yan Nu, played by Xiuwen, was ordered to kill him. In fact, the slave is controlled by the adulterer, and he can't help himself. In the end, Yan Nu assisted Rong Ziyun in eradicating the bad guys.　　Xiuwen plays the role of Yan Nu, who is a subordinate of the Lord of the Seven Killings. Glamorous and charming, tender like water.　　was sent to Taoyuan Fort to assassinate the young lord of the fort, Rong Ziyun (Miao Qiaowei), but fell in love with Ziyun at first sight. Later, he changed his evil and returned to the right, and helped Ziyun deal with the seven killing city lords.