In his previous life, Lin Yang was a rising star in modern medicine. A top biomedical PhD, he had achieved a great deal in the field. With his talent and hard work, he explored the mysteries of life in the lab and made several major scientific breakthroughs. But fate played a cruel joke on him. In a laboratory explosion, he transmigrated to ancient times and ended up in the body of a five-year-old child named Lin Xiaoyu. Even so, he still used his modern knowledge and intelligence to work at changing everything around him. He knew that in this dog-eat-dog world, he could only protect himself and those close to him by constantly growing stronger.