The martial arts have had a long history of suppression and censorship. This has led to literally hundreds or maybe even thousands of martial arts being lost. Completely erased. 

These were ancient bodies of knowledge with great benefit to humanity. All gone except for a very few. All due to various forms of suppression and censorship. This episode will give you a look into how this was done and the results. At least from my limited and somewhat ignorant perspective.

If you want to begin learning one of the only known arts to survive this suppression you can get beginner classes  at

https://shoushu.locals.com