Before the Alien Civilization Came, I Created a Two-Way Foil!

Jiang Zhou, who experienced the invasion of alien civilization and a devastating blow to the world, traveled back to a month ago. Faced with the huge disaster a month later and unable to do anything, he sold his belongings and prepared to live a peaceful life before the arrival of alien civilization. At this time, Jiang Zhou was bound to the strongest technology system and obtained the two-way foil manufacturing drawings. Then. Jiang Zhou regained his confidence in order to have the power to protect himself before the arrival of alien civilization. He resolutely decided to create a two-way foil within a month... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.