Bianliang Mystery: Mafan's Tribulation of Life and Death

A Qin horse that should not have appeared in Bianliang led horse dealer Zhao Mu, who was born in Mafan, into a series of murders - all the deceased were people around him, and all the clues pointed to the secret letter with lacquer that he dared not open: it was a letter that could shake up the chess game next to the imperial couch and provide ironclad evidence for the deployment of troops and cliques.