Ye Fan's relentless provocations forced Hall to face him, which was exactly what Ye Fan wanted. By displaying a bit of dominance, killing Hall during their sparring session seemed inevitable, preventing Lu Xiangxiang and others from facing unnecessary trouble.
He could predict that even if he truly killed Hall, Sky Net wouldn't do much to him. Sky Net needed him for its larger strategic plans. That's why Hall was relatively insignificant to Sky Net and posed no threat.
Ye Fan precisely understood this point and wanted to kill Hall to seek justice for Gu Qiong's death.
By that time, when Gu Qiong was dead, Sky Net would likely ignore it and find excuses to cover it up, probably even blaming Hall alone for Gu Qiong's death. To calm Ye Fan's anger and ensure his cooperation, Sky Net would inevitably take a step back, because Ye Fan's anger and hostility were not what Sky Net wanted; his support was what Sky Net craved.
