Chapter 451: Chapter 219: The 4th Upgrade_3

However, as Yan Fei grew closer to the core circles of the world, the enemies he faced became increasingly powerful. The F-15-shaped Drone was clearly insufficient in strength and could no longer help Yan Fei achieve more glory. Therefore, the Drone had to be upgraded, and even though Yan Fei had deep feelings for the F-15-shaped Drone, it was time to part ways with it.

Touched, Yan Fei stroked the cold body of the Drone one last time, then, without looking at the Drone, he pressed the upgrade button, now red, on the virtual control screen. As Yan Fei pressed the button, the red upgrade button flashed and disappeared, and then everything went black before his eyes as the consciousness attached to the Drone was ejected from the virtual control screen and returned to his own body.