Hello - Thanks for the suggestion! I'll have a closer look at this soon. There is a lot of information and experience in the post you linked to. I'll enjoy going through it when I have a bit more time.
So far, it has been a tough task to suss out the qigong systems & teachers that have a solid base in tradition. Granted, the qigong courses focused on exercise and movement also have their benefit, especially for people who don't normally get much, but I'm searching for more. Many of the systems seem to be yet another trademarked name with their own "certification", many of which have to be renewed annually at significant expense. Some of the certifications also seem to be handed out too easily. I get that certification can be a way to maintain quality, but it's hard not to feel that some are more about the cash than about furthering the art, philosophy, and energy of qigong. A few even give off a cultish vibe around the personality of the founder-.
In any case, a certificate is less important to me than developing a real depth of knowledge and experience. So the search continues for now.
As far as the HSK, Level 6 was the highest until recently when they added three more levels, HSK 7-9. This is the blurb describing it "The HSK 7-9 test is intended for scholars, Sinologists, and Chinese language and literature students at the university level. In other words, passing HSK 6 should equip you with a basic mastery of the Chinese language (fluency) and you don't necessarily have to take the 7-9."
Thanks again for the good info. Glad to be here!