The information Ruan Qi mentioned was recorded in the materials inside Cheng Qi's secret room.
The X Organization's "Nightmare" potion was improved based on the Poison Sect's formula "Nightmare". The Poison Sect's "Nightmare" is an extremely potent mental toxin that targets spiritual power.
This toxin is very powerful. Hundreds of years ago, the Poison Sect used this formula to stir up the martial arts world, eventually carving a bloody path from amongst the many sects, becoming the leader of all poisons.
Ruan Qi: "In those years, the ancestors of the Cheng family only developed 'Nightmare' to secure the Poison Sect's top position in the martial arts world, but did not develop an antidote. Therefore, 'Nightmare' is an incurable poison. However, later, one Poison Sect Leader found this toxin too evil and spent their entire life developing an antidote. But that Leader was unlucky, as they were killed by an enemy before they could finish the antidote."
