Final, for instance, IK how to control his boxing action to face or belly, need to customize a lot of this kind of action, to build a table similar to the picture below, and then there are the custom, IK need to write their own, specific how to implement, no experience, ever do something big, is the final request, you do an action, then the characters with the same action you do, is the body feeling, such as the early stage of the specific how to define the IK, to achieve a similar operation ah,, bosses, ah,