Lodestone (слэш)

Zhou Zishu's gaze lowers to his wrist, circled in red. The thread there that once wound around it in a closed loop, currently stretches out into the dark—unmoving and constant, undisturbed by the late summer breeze.
In front of him lies a body that should hold its other end, but doesn't. So that begs the question.
Where is Wen Kexing, and why does this corpse wear his face?