Tai-ji subdues a dagger pointing against my back by 拨草寻蛇(2 versions) - 狮城黄师傅
拨草(anti-clockwise deflection) : Turn around and swing my hand to ward-off the dagger-arm ! 寻蛇 (trace for his throat):raise my palm along his chest to reach his throat and choke it ( 锁喉). Finally push forward to throw him ! (note : the final part is not shown in the video). Google+