Frostfire Poison

The Frostfire Poison is a poison from the novel The Langya List (introduced chapter 143 of the webnovel), and the show Nirvana in Fire.

This poison is created by the Cold Scale Insects living in Meiling, biting into burned flesh. The poison affects Mei Changsu and Nie Feng.

Adaptations
It is mentioned for the first time in episode 40 of the show.