It was a scene with wires. He was thrown towards a rock wall, but when he landed, he used his right leg to break the fall, There was probably too much tension placed on the leg. Not fun at all.
I see that male lead casting changed to Johnny Huang. Will wait for concrete updates, coz in any case Esther can be changed to a different female lead as well.
https://youtube.com/shorts/wMo3ePXQCgA?feature=share