1) Cartilage skills: First, relax and soften the muscles. Then you can fold the bone tighter.

2) Traditional internal strength can also make bones and joints more flexible, just like restoring children's bones.

But at the same time, it has the strong density of adult bones.

Li San, Swallow, is not the only one who can practice bone shrinking skills.

If you are interested, you can find the video of "Wang Leyan Performing Arts (New Swallow Li San) Shrinking Bone".