He only holds him down for a few seconds, but then immediately releases his throat, allowing airflow to return. After his kicks connect to him, hitting him repeatedly, he sees Wei Ying's struggling face and was struck with immediate guilt. The kicks don't hurt, it's his expression of struggle.

"..." Without saying a word, he becomes upset again. At himself. He realized his own weakness is his own feelings for him. Very quickly he removes himself off him and forfeits the sparring match, leaving him on the floor. The feelings in his arms should return shortly.

He goes to sit numbly in front of the mirror, with a dark cloud over his head, but not looking at himself in his reflection.