Foresight
What Jason could see was not only the trajectory Brell's spear was currently following but also where exactly it would be a fraction of a second later.
Years before, Jason had already learned to foresee someone's attack owing to the way they struck him, and picking up the subtle movements made by them that he would miss when he was still a rookie.
However, over time passing and a significant increase in their cultivation, his opponents were becoming more ruthless. They were now attacking him deceitfully, with attacks that didn't follow the subtle movements they revealed.
This was, in fact, a tactic utilized by some soldiers in order to confuse their opponents.
Brell seemed to utilize the same tactic but to his bad luck, he could see a faint white glint could be seen in Jason's eyes as he evaded every single attack of him.