The Sword Holds the Mountains and Rivers, and You Take the Throne of the Emperor.

I have been lurking in the Xuantian Sect for thirteen years, to avenge the entire clan of the sect leader and avenge the bloodshed. I was six years old that year. They bloodbathed the palace and left me alive. At the age of seventeen, I won the first place in the martial arts test. Mu Qingli, the daughter of the sect master, personally taught me the sword. Little did she know that I was lingering outside her window every night, and the hidden knife in my sleeve had been sharpened a thousand times. The emperor of the DPRK urgently summoned me to the capital and promised to exchange my position as consort for Xuantian Sect secrets. I promised to surrender on the surface, but secretly handed the flaws in my skills into the hands of my mortal enemy. When the dynasty's army pressed on the territory and civil strife broke out within the sect, the emperor held his hands and laughed, waiting to reap the benefits—— I stood on the high platform of the Imperial Ancestral Temple, wearing gold armor with a dragon pattern, and behind me were a hundred thousand elite soldiers who turned against me: "Father, the green hidden dragon has returned." The servant of Jiuchong Palace exclaimed: "Is that the emperor's eldest grandson who was slaughtered thirteen years ago?" Behind the screen, Mu Qingli held the hilt of her sword tightly: "So that's what he meant when he asked me to marry him."