I studied his form when he came to the USA, and later visited him in Beijing. There I discovered he is lying about his age – in the video he claims 90,in the USA it was 96. In real life, it was 73 years old, that was probably 5 years ago, so now 78. I can forgive for lying, in China it adds status….he is a lovely guy, mostly, just don’t get into business with him – Francesco can tell ou about that as his former organizer….
If you want to learn his form, Francesco Garripoli puts it out on video.
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!