None of this means what you think it means.
... unless you are chi-kung master or have practiced Tantric Yoga.
Yes, all of this is doable. But, most americans do not even believe in chi.
And of those that know chi, few practice working with chi.
Even in american (body) yoga, most don't even practice chi flow.
Alchemy means the converting of base elements into higher elements. Or, to use a bastardization of terms, you convert the simple physical sexual ejaculation into higher kundalini energy.
First steps are learning to flow chi through your body.
After you know its feel, then you practice converting lower vibrations into higher vibrations.
Then you learn how to take your rising sexual peak, and turn it up the spine into higher energies.
and wikipedia is not a place to start this journey. Be well
I was a student of Mantak Chia for a time. What did you think that I thought it meant?
Since most of us are here in the west (western culture) I have no idea what to expect.
I get responses of the above ranging from porn to magic.
I do not know if this is from you or wikipedia. Anyone who has been a disciple knows exactly how much practice they need to put into it. And "elite ruling class"???!!! Where does that come from. Only in Tibet were the Rinpoches and Rulers the same people. Most rulers had very little wisdom in the spiritual. It is not something that you just have to have the right teacher and bang, there you go.
So, taking all your replies here, I have no idea what you meant.
That is from Mantak Chia, an accomplished master who introduced me to these practices. The techniques were most certainly used by various Chinese emperors in T'ang and and other dynasties. And the practices were kept confidential in the past. They are now out in the open, similar to the way Tibetan practices have now been widely written about, hence your knowledge of their existence - unlike many years ago when I lived in the Himalayas and they had not yet been made public.