The novel perspective of the work, the unique setting of the murder in the mural, and the two-line conspiracy between the court and the Jianghu. In terms of story conception... (Tapping his fingertips on the table unconsciously) How about using the background of the prosperous Tang Dynasty? The collision of medicine and law during this period is particularly interesting. The protagonist is called Su Yan, a young widower from Dali Temple, but he is given a setting that he suffers from "iridopia" and can see traces on corpses that ordinary people cannot see. However, this ability will give him severe headaches and become a double-edged sword.
How about the main case of serial murders? Each corpse is placed in a torture posture like in "Hell in Disguise", and the murderer is copying the mural to kill! But the first case is more hidden-it seems to be a girl who hanged herself, but Su Yan found lapis lazuli powder under her fingernails, which was a pigment only used by court painters.
All foreshadowings must be closed: the lapis lazuli powder points to the painter gang; the drug boy's muteness is due to the failure of the drug test; the secret words in the old man's annotation book are actually asking for help. The most critical reasoning breakthrough point was when Su Yan discovered that all the deceased people had gone to the same Taoist temple to "cure headaches" - and there were unfinished murals hidden in the Taoist temple's cellar.