When the Yuezhi Kingdom in the Western Region was destroyed, the princess Liming Xi bore a blood feud. She disguised herself as a man under the name "Li Jiu" and sneaked into the Daqi Imperial Guard Camp, waiting for an opportunity to seek revenge on the culprit, Prime Minister Li Sinian. With her sharp light kung fu and soft sword skills, she became the personal bodyguard of the third prince Gu Sen. However, as she spent time together day and night, she gradually fell in love with this prince who was cold and forbearing and had the world at his heart.
From the secret fight to audit the household accounts in the capital, to the thrilling pursuit of pirates and collecting evidence in the south of the Yangtze River; from the search for Yueshi survivors in Mobei and the persistence of protecting the oasis, to the revelation of the conspiracy of the powerful officials in the court to collude with the rebels and instigate internal strife among the tribes - Li Mingxi and Gu Sen fought side by side, starting with revenge but ending with protection. They transcended ethnic barriers, smashed crisis after crisis, and built the deserted Mobei oasis into a home where people can live and work in peace and contentment.
When the revenge is over, the remaining sins of the royal party are not cleared up, and the capital is once again in turmoil, how will the lovers, who have been bloody in Mobei, protect each other and the hard-won peace in the whirlpool of palace intrigues? A soft sword hides its edge, and the clear light cannot be concealed. This is a legend about revenge, protection and affection, and it is also an ode to peace across the windy and sandy desert north and the capital.
