This kind of disease should be genetic. However, science could not explain many genetic diseases. Perhaps one day, when medicine was really developed, they would discover the specific cause.
"Probably!" Yan Yuanfei let out a low sigh. He narrowed his eyes slightly and looked lovingly in the woman's direction, his eyes as gentle as water.
Yes!
According to the family's records, this was the price to pay. To shoulder the fate of the world, they were cursed to only have one male per generation in the Yan Family. Every generation would die young.
He had seen his father die after suffering endless torment. His grandmother and mother had shed tears over his death.
Therefore, he did not want his lover to suffer the same torture. He did not want his son to experience such a thing.