Lin Jingzhe is the youngest member of the Qianhu family in the Jinyi Guards Command and Envoy Division. Everyone in Tiqi is afraid of him like a ghost and calls him "Little Yama". Because the embroidered spring knife in his hand never hesitated at all because of power or personal relationships. He was like a lone wolf dormant in the shadows, surviving countless bloody days and nights, just waiting for an opportunity for revenge - to kill with his own hands the enemies who destroyed his entire family. Under the emperor's order, he thoroughly investigated the Jiangnan salt tax case. He peeled off the cocoon and traced it all the way from Jiangnan to the capital. All the clues pointed to the powerful and powerful chief minister of the cabinet, Su Shi. He thought he had finally waited for this day, and the flames of revenge were enough to burn everything. But he didn't expect that when he was setting up a dragnet and preparing to kill his enemy, a ray of moonlight stubbornly shone into the abyss where he was. The chief assistant's only daughter, Su Wanyue, the number one jewel in the capital, crashed into his world like a moth that didn't know whether to live or die, full of loneliness and innocence. She washed his hands and made soup for him, defended him against open and hidden arrows, brushed off the blood on his knife, and covered his coldest piece of ice with her softest heart. On one side is a blood feud, on the other side is deep-rooted love. Lin Jingzhe struggled between love and hate, thinking that this was the cruelest test that fate had given him. Until the files on the salt tax case were completely opened, a royal secret that had been sealed for many years was exposed to the light of day. His so-called "tragedy of family destruction" was actually closely related to the old events in the East Palace. And he, Lin Jingzhe, was not an orphan at all. He is... The only surviving bloodline in that palace incident, the prince who lives among the people.