Shuai Jiow is about throwing. All about throwing. Throwing people down hard, on their head, wihout support.
The idea is to hit the person with the biggest thing around. And that's the ground.
I've trained in Chang Style Tai Chi, which is VERY Shuai Jiow oriented, I use the throws in sparring, and I've seen it in action. In all cases, very effective.
If you need more information than what Water Dragon has posted then I suggest you go back and wask Water Dragon. He's the leading SJ proponent here.
JWT
If you pr!ck us, do we not bleed? If you poison us, do we not die? And if you wrong us, shall we not revenge? If we are like you in the rest, we will resemble you in that the villany you teach me, I will execute, and it shall go hard but I will better the instruction. MOV