bump 还好,没事
我学人家跳的是rail
可见冲上去再下来,跟直接从上面下来的用力是不一样的

I was too high, feeling totally invincible and totally forgot my right kneel cap was kinda 'injured'...now I am making it worse. oh, well, maybe I am just over worried. I don't feel any pain at all now, even I heard the sound of join impacting another join.