During the three hundred years of the Dayin Dynasty, there was peace on the surface but undercurrents were surging. Xiao Jingrui, the eldest son of the Jingnan Palace, pretends to be stupid and goes about his life, but in fact he controls a secret power. Jiang Yueniang, the concubine of the side courtyard, is taciturn but has a good knowledge of ancient books and magical arts. Strange things happen frequently in the palace: wells are overflowing with blood, servants are sleepwalking, and ghosts appear in bronze mirrors. The two of them each had their own secrets and were forced to join forces to investigate the case. Changes in the earth's veins reveal centuries-old secrets, and the court's intrigues hide murderous intent. He relied on his ingenuity to make plans, and she relied on secret techniques to break the situation. Pretending to be a pig and eating a tiger, the prince × a sultry concubine work together to solve a mystery and make a comeback. The relaxed daily life reveals the weirdness, and the ordinary interactions hide the heartbeat. See how they use their brains and secret skills to win out of chaos.
