Mr. Hou, Is There Any Progress in the Case Today?

Everyone knows that Leng Qianxun, the legitimate daughter of the Leng Mansion, is the most dazzling pearl in the capital. She is good at playing music, chess, calligraphy and painting, and can be regarded as a model of a noble lady in the capital. However, no one knows that she is best at solving suspenseful mysteries based on clues. Lu Zhao, a hereditary marquis authorized by the imperial power, is also the master of the Wanying Pavilion, the largest intelligence network in the world. He was once the sharpest knife in the emperor's hand, but who did he stab in the end? A bizarre "Imperial Examination Demon" caused Lord Lu, who was ordered to investigate the case, to cooperate with a noble lady from the Beijing circle who seemed weak but could see the essence of the incident. A series of bizarre cases, from the capital to the border, seems to have a red line pointing towards the solemn red wall. The two of them cut through the thorns on the road ahead, and their love secretly grew in their dependence on each other in life and death again and again. When they followed the trail of blood and conspiracy to find the truth, they finally got to the core, only to find that the culprit was Huanghuang Tianri himself. At the end of the chessboard, can she and him work together to find a way out and uncover the truth?