As the light rain soaks the capital, Muzhu, a female carpenter from Weimufang, hides her superb mortise and tenon skills in the market. She only spends her days with old wood and neighbors, living a low-key and contentious life. A series of secret room murders in Prince Yi's Mansion broke this tranquility - the deceased were all trapped in a confined space with a mortise and tenon structure. Only a wooden sign with a strange pattern was left on the scene, and the clue pointed directly to this inconspicuous female carpenter.
Lu Che, the minister of Dali Temple, investigated the case with all his might, and was keenly aware that although Muzhao seemed ordinary, she had a hidden reaction to the "Construction Method" diagram that specialized in palace architecture. Her carpentry skills were far beyond the level of ordinary craftsmen. Suspicions arose, so she had to be included in the core of the investigation. As the investigation deepens, Mu Yao discovers that the mortise and tenon joints and wood carvings in the case are vaguely linked to the Suzaku Gate project in which her family was wronged ten years ago. Her true identity, which she had hidden for many years, and the bloody feud that her father was falsely accused of, are gradually coming to light through mutual testing and joint investigation with Lu Che.
The fireworks in the market are intertwined with the intrigues in the court. Mysteries are hidden in the tenon and tenon joints, and people's hearts are determined. She used the carving knife as a blade to decipher the code in the wood; he used the law as a shield to tear through the fog of power and desire. When the frost marks of a ten-year-old case overlap with the blood stains of the current murder case, this pursuit of justice using wood as a matchmaker will eventually reveal the hidden truth amidst the light and shadow of swords, and allow two lonely hearts to find their destination in mutual redemption.
Concept: What does it look like to love someone?