Actually I was hoping that you might respond, because of youre experience with Mantaks practices.

I also find some of his writings interesting, concerning the techniques he presents, but also mainly because I feel, when it comes to Toaist pracices there really is a lack of choice in reading material... But it seems he really is not to open minded in his presentation of his view at this subject..

Still I would suggest that maybe more then one Taoist might make the statement, that using Psychedelics can drain your jing. I am not sure what to make out of all the jing philosophy anyway, but the old Taoists definitly had something going...