This verse describes a common problem when interacting with a strong partner. If we do not move at the correct time and take the correct position our own structure will suffer the consequences. We will have to distort our position and our body in order to cope with the superior structure and position of the partner. It is an extremely common occurrence in Martial Arts but in Tai Chi where there is a specific focus on our own body method to make our tactics effective, it is of larger importance. ...