Science Fiction: Alien Invasion, the Whole World Is Begging Me to Fight!

Five years ago, aliens invaded! Doomsday battle! Humanity struggled to resist, and the battlefield was stained with blood. But there was a huge disparity in strength and he was brutally slaughtered! Fang Qiming died in battle and traveled ten years ago. Have a system to control time! Stop time and gain respite for humanity. Accelerate time and make technology advance faster. Star rail cannon! Liquid metal device! Brain Network! Awaken the heroic soul of the Dragon Kingdom and become a warrior again! Alien invasion, the whole world is begging me to fight!