My End Comes from Aliens

According to the deployment of the United Earth Fleet, this will be a war that mankind must win. Unfortunately, in the face of the Trisolaran's water drop weapons, the thousands of warships that mankind is proud of turned into wreckage in an instant, and mankind is destined to perish. At this moment, Tang Wei, as the chief scientist, traveled back in time. The heavy responsibility of rewriting history and saving mankind falls on his shoulders. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.