If Han Sen was competing with a power that lacked the speed to drive it, he would have little trouble.
Power was pointless if it couldn't reach an opponent; in this case, Han Sen. Xu Mi's sword might have carried the strength of a mountain or the force of a super creature, but while it was being tracked by Han Sen's Dongxuan Aura, it wouldn't find a target. The fight was playing out in advance in Han Sen's mind, as if Xu Mi was a puppet on strings.
Even if Xu Mi wished to attack, risking his life and putting everything he had into one deadly swing, he wouldn't land a strike. It was as if the two fighters had established a secret agreement that forbade Xu Mi from even touching Han Sen's clothes.
Han Sen swung Taia casually, a move which forced Xu Mi to reel back in a clumsy dodge. His sword was powerful, but he had no choice but to fall back.