Dark Forest? Human Civilization Turns on the Lights!

Super-light fleets traverse the planetary sea, energy weapons tear apart space, and even powerful alien academics annihilate the stars with a snap of their fingers. The universe is a huge dark forest, but human civilization has been exposed long ago and has become an ant under the feet of the invaders. Zhang Chen traveled through time and discovered that as long as he killed human traitors and eliminated alien invaders, he could obtain enhanced energy to strengthen himself. When all he could see were the corpses of alien academics and the wreckage of alien battleships, Zhang Chen sent a broadcast to the universe. Hunters in the dark forest listen, human civilization turns on the lights!