This is very much a real possibility.
Those slave organizations are anything but kind-hearted folk. They kidnap people and sell them off. Besides the basic selling points like hard labor and beauty, people with special constitutions like this might very well be one of their major selling points too.
Thunder City buys slaves continuously every year. It might well be that they're buying drug-enhanced people from the slave organizations...
After all, what Ding Hui saw was only one An Mansion, and Thunder City's Ten Major Families really do number ten whole families! That level of demand is anything but normal.
"Don't panic."
Seeing Fang Yu's expression change, Ding Hui spoke up to comfort him.
