Peak 3rd density sword arts from ancient Europe

[Diana]

The vibration sword techniques that can cut solid rocks in half, is not due to the sword but due to the chi infused into it by the wielder. Even chopsticks or wood can penetrate into solid obkects like hardwood.

Some of the secret societies and asian family lineages still have it but it is a true secret. Likely related to softening of the stone for giza.

Yes, and a blade of grass can penetrate a tree during a hurricane. So all of these things are possible. And though some have kept secrets, one can access this information—with dedication and focus—one's self.

If you recall, Bruce Lee got into trouble with the Chinese here for teaching "secret" arts. It takes a lot of energy to maintain secrecy, like holding back a tide, especially when more and more people are desiring to pierce that secrecy.