This fish is a mutated type, with the remarkable effect of cleansing blood viruses.
Previously, Xu Xingguang told Huo Wen'an he had a hereditary disease from his family. But what she didn't tell Huo Wen'an was, his illness might not necessarily have been inherited from his parents.
It is more likely that his ancestors experienced similar illnesses, but it accumulated over generations and manifested in him.
In other words, while his predecessors were sick, their illnesses weren't severe. Yet, in his body, it has completely formed a disease system.
And he would become the first victim of this genetic illness to die.
If he had children, they would also inherit his genetic disease.
The first step to treating this strange illness is to cleanse the viral genes in the blood.
Xu Xingguang's herb repository does have ancient herbs that can cleanse blood, but they're all dry herbs. Their effects are too weak and nowhere near the efficacy of the Earth Dragon.
