Please Call Me Lord Yama’s Messenger

After the Eternal Night, terror revived.

Ten li of desolate graves, eerie singing.

An old man searching for his arms, a headless infant...

They keep piecing their bodies back together, releasing even more horrifying auras.

In the wasteland, even a severed hand can destroy heaven and earth.

In this dark and desperate world, there is a postal office faintly appearing...

A mysterious young man, a ghost mail van traveling through the void...

Letter after blood-red letter becomes taboo in the mouths of the people...

—Ghost Messenger.

PS: no female lead, or only one female lead (don’t guess randomly; at least not Zhou Han).