I Asked You to Develop Cold Medicine, and You Gave Me a Marrow-Cleansing Pill?

"One year later, the spiritual energy is completely restored!" "Three years later, the extraterrestrial demons will fully invade Blue Star!" "In five years, all mankind will be destroyed!" Lin Long traveled to a parallel world and was bound to the "Martial Arts Promotion System". At the same time, he learned the news that all mankind will perish in five years. Fortunately, there is a system, and as long as you popularize martial arts, you can get generous rewards. At this moment, as the director of the R&D department of a pharmaceutical company, he received the task of making cold medicine from the company. When the company's executives saw the innovative products developed by Lin Long, they were stunned! "I asked you to make cold medicine. What's going on with this marrow-cleansing pill?" Subsequently, he developed more innovative products: the new means of transportation 'Flying Sword', the new type of fireworks 'Nine Heavens Divine Thunder', the new communication tool 'Sound Transmission Stone'... Three years later, the demons from outside the territory invaded from Yingjiang. Within one day, Yingjiang fell. The demons ridiculed: "The natives of Blue Star are too weak!" Until they invade the Dragon Kingdom... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.