Graveyard of a Queen

Graveyard of a Queen finds Xu Lei's grave-robbing team stranded in a swamp thick with deadly serpents and haunted by unexplained voices, still chasing the trail of Uncle Three's long-lost love. Their path leads them through the flooded subterranean irrigation system of a vanished empire, where they uncover more than they bargained for. When Uncle Three finally resurfaces and the elusive Wen-Jin steps out of hiding, the answers they bring only deepen the group's unease, pushing even the stoic Zhang Qiling past his limits.

The sixth volume tightens the series' central mysteries around the expedition members' pasts rather than resolving them.