C273 'transform into a Porcupine.'

The gravity of this planet was much higher than that of Earth Star. It was at least two times higher, and the oxygen content in the air was also much higher.

The dense vegetation, the continuous mountains, and the iron-gray land.

Hsu Yuvran rode the Flying Sword and ran wildly. It was five times the speed of sound, six times the speed of sound, and seven times the speed of sound