The sound of rotors spinning tore through the night wind, whistling through the pale mountains as they flew farther and farther south.

The helicopter is getting closer to the target location.

It was still dark outside the window.

Ink-like night rendered heaven and earth, and in the darkest hour before dawn, only the helicopter's signal lights flickered in the air.

In the somewhat crowded cabin, Li Tianlan slowly opened his eyes.

The faint sound of a call rang in ...