In Order to Reduce My Sentence, I Handed over My Black Technology to the State

[Black technology + major country infrastructure + global disaster + interstellar exploration] In 2198, mankind was defeated in a battle with alien civilization. The last human being opened the door of time and space and returned to 2022. His soul possessed a criminal, and in order to reduce his sentence, he decided to hand over black technology to the state! As a result, the stuck chip problem was solved; the east-west water transmission project was put on the agenda; and the synthetic starch production line began to operate. Lithography machines, super batteries, aerospace motherships, Xuannv fighter planes, Chi You mechas, lunar bases, galactic fortresses... In order to avoid the fate of human extinction, Chen Xinghe stepped forward, and one human miracle after another happened under his leadership.