The Grave Robbers' Chronicles: Misfire

When the rainy season arrives in Hangzhou, Tianjing Lane feels as if someone has tossed it into the water. Wu Xie sat behind the counter, listening to the rain outside. Suddenly, Pangzi came by with a secret message from Xie Yuchen: corpses were floating in the Xiang River, stones stuffed into their eye sockets, and all the dead were former members of the Old Nine Gates.

Every clue pointed to the legendary place said to drive people mad: Mute Valley.