That aura, he would never detect it.
Needless to say, that aura must have been stealthily left behind by Dragon Taoist when he approached just now.
The Dragon Taoist was very secretive, and he was also very cautious. He did not leave that aura on Lin Jing's body but rather on the hem of his clothes.
At that time, Lin Jing clearly had his guard up, yet he was still marked by the Dragon Taoist. It had to be said that everything the Dragon Taoist did was indeed very covert.
It was exactly after discovering that aura, that Lin Jing believed in Bai Yi's words. This Dragon Taoist was not as he appeared to be but a sinister and cunning character.
Although he discovered that aura, Lin Jing did not make it known, nor did he remove it.
After all.
With the level of strength Lin Jing had shown, he should not have been able to detect that aura.
That's why the Dragon Taoist could be so bold.
If he himself had removed the aura, that would have been problematic.