In the autumn of the 26th year of Guangxu's reign, bizarre murders occurred one after another in the Tianjin Concession. All the victims had their eyes gouged out, and their chests were branded with the 40th hexagram pattern of "Tui Bei Tu". The British consul Charles died suddenly in the French Concession mansion. Half of the silk scroll "Pictures Found in the Cold Mountains" was found among his belongings. The inscription and postscript in the painting were the same as the handwriting on the case file of Shen Molin's murder case, which was sentenced to death by the Beijing Taiyuan Hospital 20 years ago.