The trigger (1)

"Antecedent atavism? but I don't have a generational bloodline for it to happen, or even a natural one for that matter?" said Yang Qing in confusion.

The institute had given them plenty of courses into physiques. The more they knew the better they could do their jobs and even protect themselves. So they had dissected many of them over the years at the Institute, and in many cases, they even got first-hand experiences during their duels with convicts from the Requiem.

During the course of their study, he had come across 'antecedent atavism' which colloquially meant borrowing from your ancestors.

It was a unique feature that appeared to those who inherited their physiques, for example, the spirit jade turtle Li family. One of their members had a chance of antecedent atavism happening to them.