Oh totally... in fact I still use plenty of his stuff myself. I think people tend to forget that when you see people passing each other info on the 'orbit' at sites like this, it's basically down to him.

I can't post links yet, but if you type "mantak chia master yourself" into YouTube, you'll see he looks pretty darned good for 67 years of age. :)

EDIT: I'd be interested to know about your own Taoist ritual approach...