Medical and Spiritual Qigong (Chi Kung)
What is your purpose in posting this slanderous material? Don’t do business with him, don’t believe him about his age… I think you should have some respect. I have enough years of experience to recognize a proficient martial artist when I see him/her practicing. Master Duan is the real thing, so leave it at that. Attention seekers like you make the Internet an ugly place; go back to meditation!
Kevin