The leg grab hook throw ( in chinese: bao tui gou shuai ) is a sanda throw where you grab your opponents leg and then sweep his leg. You can apply this technique after a side kick or a front kick. Grab your opponents leg like shown in the video. One hand under the leg and push with the glove of the other hand on top of his ankle. Then move forward and hook his thigh close to the hip area ( shoulders close to opponents trunk ). Stand up a little and hook / sweep his standing leg. The only moment where your opponent could counter-attack you is when you move forward ( you don't have your hands free but he can punch you ).
Animated Sanda Lessons:
Sanda Main
Sanda Fighting Stance
Performed by: Li Xin and Zhang Hua Dong
Coach: Zhou Zhang Yong - Song Jiang Wushu School