When Chu Fei rushed to the Potion Research Center, it was around three in the morning. In the dead of winter, it was pitch-black.
Under those circumstances, Ren Qingyun was dragged out of his lab by Chu Fei.
Like Chu Fei, Ren Qingyun hardly slept. They were all cultivators—what even was sleep? Grind yourselves to death.
Ren Qingyun had been happily grinding away when he was suddenly interrupted. Looking at the failed experiment in his hands, he gritted his teeth and stared at Chu Fei, who had burst through the door. "You'd better have an explanation. Even if you are the city lord now."
Chu Fei took out the Purple Frost Bloom he had just finished refining and explained the situation.
Ren Qingyun's expression instantly turned solemn. "I'll test it."
Once inside the lab, Ren Qingyun activated an advanced testing device and carefully took one milliliter of the potion for examination.
Yet the result was: Level 6 (12.0) Advanced Potion. Effect: strengthened the foundation and replenished vitality, consolidating one's base.
Looking at the result, Ren Qingyun frowned slightly. "It's quite impressive that you refined a 12.0 Advanced Potion. But this isn't poison."
Chu Fei smiled, sliced open his finger, and dripped blood into the potion.
Then the data on the testing device began to change.
First, the potion's test result suddenly gained the effect "clears heat and detoxifies."
But it immediately changed to "cold in nature, capable of neutralizing heat toxins."
It still appeared to be a beneficial potion. Yet Ren Qingyun narrowed his eyes. He seemed to have seen the answer.
Three seconds later, a red warning suddenly appeared on the testing device: "Level 7 lethal poison!"
"A 13.0 poison!" Ren Qingyun looked up at Chu Fei, disbelief flashing through his eyes. "You refined a 13.0 poison in just