C1901 Unknown Reward

"What did you say?" I exclaimed, "Isn't this the smell of a catalyst?"

"Have you forgotten how Nie Bi became a Gu baby on the island?" Ouyang Jingjing asked back.

I instantly realized. Nie Bi had formed a Gu Nascent in his stomach because his mother, Nie Ping, had been injected with a catalyst.

So the catalyst was precisely the key.

Ouyang Jingjing continued