Hainan Secret Military Base.

The silver wings spiraled, and several military green helicopters flew across the sea and sky, startling the pure white seagulls in mid-air.

Suddenly, several figures descended from the sky. They opened their huge parachutes and landed steadily while shaking and pulling.

Half an hour later, Mu Nan twisted his sore neck, his military leather boots heavily stepped on the mud and sand, and his sharp eyes swept past the ...