Wen Yuheng was once the most favored legitimate daughter of a family of imperial physicians. She knew all the essentials of the Golden Chamber by heart. She only waited until she had hair extensions to marry the most gentle and jade-like man in the capital. But overnight, charges of collaborating with the enemy and treason fell from the sky, and the seventy-two members of the Wen family were stained with blood, crushing her innocence and future to pieces. She was the only survivor, crawling out from among the dead, heartbroken. When he opened his eyes again, the charming and innocent daughter-in-law of the Wen family was dead. The one who survived was "Azhi", the taciturn sage of the apricot forest in the Jiangnan water town, and an avenger who used poison as a blade in the dark night to lay a dragnet on the capital. She thought she would be alone, walking in an endless hell. Until she met that person - the Living King of Hell, Lu Shiyan, who was in charge of the Jinyi Guards, had power over everything, and was feared by everyone. With the emperor's secret order, he traced an old case, but clues repeatedly pointed to her, a seemingly harmless folk doctor. He tests, she deals with; he presses, she fights back. On the chessboard, the two were both enemies and friends. In countless confrontations, he gradually discovered that this cold female doctor concealed the shocking secret of the heinous murder that year. Small Theater: One day, Lu Shiyan suffered from a chronic illness and a splitting headache. All the imperial doctors in the capital were helpless. He was lying on the hospital bed, looking at Ah Zhi who was slowly applying acupuncture on him, and gritted his teeth and said, "Who are you?" Wen Yuheng put a silver needle between his eyebrows, and his voice was as cold as snow: "A person who can save your life or kill you." Lu Shiyan: "..." Very good, he seems to have discovered some incredible hobby.