Reborn Academic Master: Start Saving the World by Picking up Scraps

In the Star Cage for thirty years, aliens used games to colonize Blue Star. The prosperous times were all lies. In his previous life, Jie Xian was a top student from a poor family. He missed his way out because he clung to books. He watched his family die in front of his eyes and regretted it for the rest of his life. On the verge of death, he picked up the original secret key left by the alien developer and used the power of thunder to return to his boyhood. The secret key unlocks the random exchange system of materials that can grow, and the thousands of garbage in the waste recycling station are turned into capital for growth. If you don't lose your studies, you will definitely play games. He will gradually discover the secret key authority, regain control of the tampered dimension, protect his homeland, resist interstellar power, and liberate the world where the heavens are enslaved.