As the saying goes "while those involved were clueless, onlookers would often see things with great clarity". Even though the man that had found himself sprawled on the ground had no idea what had just happened, everybody who had been watching the fight, including OS and the other non-martial practitioners, had seen everything very clearly.
However, all they saw was Gu Fei quickly tripping his opponent up, while the martial experts among them could tell the profundity within that one step Gu Fei had taken. It was like he had perfectly calculated where that man would be stepping, so he preemptively placed his own leg over. Doing so made it look as if that one step his opponent had taken was sent right to where Gu Fei's foot was in the first place.
"Your Jade Chain Step is far too precise," Gu Fei calmly told that man on the ground.
