The suppression of True Qi by the Five Vile Qi had been demonstrated during the contention at Five Finger Mountain, where Feng Yunjie using his Sword Gang to counter the Five Vile Qi was like using an egg to strike a rock.
Almost at the moment of contact, dense cracks appeared on the Sword Gang, tiny strings of black Qi spread like a spiderweb, biting into its core, and immediately Sword Light pressed down, crushing the Sword Gang and striking onto the long sword with an extremely ferocious force like Mount Tai pressing down, pushing Feng Yunjie from mid-air back to the surface of the lake.
The gap was too vast, even though they were both Sixth Rank, even though Jiang Li had only used Demon Cleansing True Qi, Feng Yunjie was no match for him.
Just the suppression of all sorts of Essence Qi and True Qi by the Five Vile Qi was enough to render most techniques ineffective, not to mention Jiang Li was wielding the Great Circle Sword, a divine weapon.