"Humph," Duan Su snorted as he saw Kai running after he was pushed back by his punch. "Gravity energy!!" He roared, and instantly a vast amount of heavy energy exploded out of his body, which was directed at the Kai group, who were trying their best to run away.
As the gravity energy surged forth from Duan Su's body, the very air seemed to thicken. The Kai group, already in full retreat, found their limbs weighed down as if shackled by invisible chains. Each step became an arduous struggle, and their breaths came in ragged gasps.
Kai's heart pounded as he glanced over his shoulder. Duan Su and his menacing entourage were closing in, their eyes gleaming with ruthless determination. The once-open field now felt like a narrow gorge, and the walls were closing in.