Long Chen was attacked suddenly, which he didn't expect. A fist empowered by a Martial Skill landed on his chest, making him fly back like a toy.
If it was someone else, they might have crashed on the wall, but Long Chen had more presence of mind and talent. He spread out his Divine Sense to make a visual representation of his surroundings in his head.
He turned his body to make sure his crash wasn't as back. He also used his half-step heaven realm Cultivator, which allowed him to walk on air and fly for a few seconds. He used the air to control his body.
His feet landed on the wall instead of his back that would have hit the wall previously. He used his feet to push him forward. He had not only controlled his body but subconsciously prepared to counterattack, but she soon realized that he was impersonating to be a guard. He couldn't attack the girl.
He landed on the ground a few steps away from the girl.