Borrowed It! This Order Has Timed Out and Delayed My Rocket Launch

In his previous life, Cui Lang was a researcher who mastered recyclable rocket technology, but due to various reasons there was no progress and he eventually died in a laboratory explosion. After rebirth, Cui Lang rearranged his life and became a glorious delivery boy! As the saying goes, those who engage in scientific research are not as good as those who do dirty work online! In this life, he no longer believes that hard work can make his dreams come true. In this life, he doesn't want to get involved in the office. To engage in scientific research, you should be pure, sincere and passionate! Who said the delivery guy can't launch rockets? With the successful launch of the rocket, the mystery of Cui Lang's death in his previous life was slowly revealed...