Hi Henrii,

My secret to the kundalini release for me was very dedicated practice of zi fa dong gong and that was practiced before I ever knew it was something other people knew about. I was inspired by direct connection to source. It is a very profound exercise.

With neigung, I believe daoist qigong methods are the most powerful...just a personal belief. A good basic book on it is "qigong empowerment" by Liang & Wu. There is a section on taoist qigong.

An 18th generation master is Wang Liping and there is a book called Opening the Dragon Gate - The Making of a Modern Taoist Wizard, I was recently introduced to and is about Liping.

Amazon.com: Opening the Dragon Gate: The Making of a Modern Taoist Wizard: Books: Kaiguo Chen

I'd recommend working with a qigong master who can actually demonstrate abilities. The concept that they don't want to show off, etc... in my opinion is justification for revealing they have not achieved high level so someone who can demonstrate something would be a teacher I would study with.