Serial mystery: When Pei Yun, the young minister of Dali Temple, was investigating the murder case of the Western Region mission, he found that the deceased had Western Region silver coins embedded in their foreheads. The peacock pattern arrowheads left at the scene pointed to the proton murder case twenty years ago. When he found a key witness in the underground palace of Ci'en Temple, the other person was silenced by a mysterious bronze masked man.
Concept: suspense detective