To Repay Hundreds of Millions of Arrears, Start with Summer Work

Whenever Mu Yuanyi saw his sick sister in a wheelchair, or the bill in the mailbox that he had clicked on countless times. He couldn't help but get hard, and his fist became hard! I finally traveled through time once, so why did I meet such an unreliable original person? In order to so-called break through the limits of the human body, he challenges all kinds of things that would make him die in the eyes of onlookers. As expected, the result was unexpected. Mu Yuanyi, who traveled through time, not only inherited his superhuman body, but also inherited his expensive medical bills. Thank you for the invitation. In this other world, I have become a billionaire. PS: This book is also called "How can I, who is physically invincible, be in the world of mechas?" ! ! .