Since Yi Yun understood that he was using the perceived ‘force’ to avoid the attack, he decided he might as well close his eyes!
When the chaotic sword beams disappeared from his sight, Yi Yun’s concentration became more focused, and his perception of the ’force’ became even more sensitive.
As such, no matter how Tao Yunxiao crazily attacked, he had no way of touching Yi Yun’s sleeves.