Han Tao received Dugu Yan's return gift.
A bottle of toxin taken from the Jade Phosphorous Serpent Emperor, possessing sufficient potency.
However, it was not pure.
But that did not matter. Han Tao had studied Pure Pharmacology and knew how to extract the parts he wanted from a chaotic mixture.
Precipitation and layering.
Boiling, distillation. Very soon, a bottle of extremely high-concentration Jade Phosphor Poison was produced by Han Tao.
The potion was a deep green, like a wolf's eyes in the dead of night.
A trace of rhythm flickered up and down within the potion, hiding a man-eating killing intent.
"Not bad. A perfect finished product."
Han Tao wore a pair of white gloves. The gloves had a built-in anti-poison fabric layer that could slow the corrosiveness of Jade Phosphor Poison.
This pair of gloves was worth a great deal, but they still could not withstand pure Jade Phosphor Poison.
"Dilute the toxin!"
Han Tao made his decision. He dripped the Jade Phosphor Poison into different test tubes.
Dilutions of 100 times, 80 times, and 50 times.
Then he began to summon his martial soul. "Martial soul, Blue Silver Grass!"
Blue Silver Grass emerged from Han Tao's palm.
Compared with before, the current Blue Silver Grass was even tougher. Its Life Force, adaptability, and Martial Soul Strength all far surpassed the past.
"Diluted a hundred times. I wonder if it can withstand it."
Han Tao dripped a tiny amount of Jade Phosphor Poison onto his martial soul.
Jade Phosphor Poison was very powerful, but diluted a hundred times, it was nothing at all.
He sensed his martial soul. There was no change.
The faint toxin could not even cause the slightest injury.
"Looks like I was too cautious."
Han Tao took out another reagent and poured the Jade Phosphor