They are just drills. But the idea is to enter and disappear at a different angle and level.... then Reappear in the blind side at the centerline, oblique and flank.... then disappear as ya exit. It’s in the treatise ... but few are willing to train hard enough to attain the skill. Ya gotta do it striking. Ya gotta do it grappling. Dispassionate... detached.... self observant..... chanting the mantra that encodes the spirit to occupy the vessel.... making one work towards being more than mortal. To be a Titan... an avatar.... a force!!!!
Treat thoughts in this way. Actions this way. Feeling this way.... Everything on the breath... and we rise.