It Is Said That I Will Be the Villain of the Apocalypse in the Future

One day, my sister suddenly turned into a robot that traveled back through time and space from the future. Her mission is to stop her brother Wei Ran, who has not yet become a scientist, from exploring aliens and save the future earth. The earth in the future world is in danger. Due to Wei Ran's exploration of aliens, the earth was exposed. Humanity has been fighting alien invading races for decades. Seventy percent of the entire earth has been occupied by the invading races. They endlessly mine the earth's resources and transport them back to their home planet. They capture earthlings to do coolies and control everyone through chips. Once someone makes any abnormality, the chip will immediately explode and humans will explode and die. How many families are falling apart and tragedies continue to unfold. The global population has plummeted to less than one percent. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.