Gu Lanshan felt a pang of fear when she heard him say that he was going to hit her. Her feet, which were not restrained, began to kick wildly. Sheng Shi let go of Gu Lanshan's hand and gave her buttocks a light pat. In reality, he wasn't using any strength; it was just a bluff. But Gu Lanshan reacted so strongly that she raised her knees while in his embrace. Being held mid-air by him, her raised knee struck right into his "little Shi'er," which had risen because of her hug. Her force was great, and the speed fierce; a piercing pain spread instantly throughout Sheng Shi's body.
Sheng Shi's complexion turned pale in an instant. He groaned and then put Gu Lanshan down on the ground, bending over and barely able to straighten his waist due to the pain.