What's the source for these videos?

[Spookex]

So I found this youtube channel while looking for unrelated TT things and it has 30-50 minute videos of old Chinese pros demonstrating their techniques with some graphics showing pointers on how to replicate them. Where do they come from? Are there more of them?

 

[lasta]

I think those are the old CTTA introduction videos. Made throughout the 70s-90s. Really good stuff, I used to watch them religiously.

I don't think there is a full playlist, but Player Name + Instructional/Training will yield a fair bit of results.