The youth swiftly lunged forward, and when he reached Su Yang, his body suddenly curled up, arms hugging his knees, becoming almost a perfect sphere.
Su Yang had intended to grab the youth, but this sudden move made him grasp at nothing. However, his reaction was extremely quick; he clenched his fist and delivered a punch onto the sphere.
When Su Yang's fist landed on the sphere, he immediately felt something was wrong. The spherical form the youth had assumed was unusually slippery; Su Yang's punch slid off as if he had hit an eel.
And the youth's speed did not decrease, as he continued to hurtle into Su Yang's chest, staggering him.
It was also because Su Yang did not want to attract attention that he didn't release his Protective Gang Qi, which was why the youth managed to hit him. Otherwise, even if the youth could have breached Su Yang's defenses, he would have been stopped by the Protective Gang Qi.