The doubleleg kickthrow is a shuai jiao skill where you throw your opponent straight over your leg. Left hand grabs the opponents sleeve, right hand grabs his neck. Do a gaibu ( a circular step that looks like if you were kicking your opponents knee ) and step to the left side. Step forward with the other leg and and the extend the right leg in front of your opponents leg. ( stand pretty close to your opponent - don't kick his shins too hard, this is not thaiboxing ) Pull him towards the ight side of your trunk and press your right leg forward at the same time. Twist and throw your opponent like shown in the video.