When visiting your website I experienced difficulty trying to order some supplies. I would like to order Iron Shirt Chi Gong 2, Tai Chi Chi Kung 1 and 2. I was also wondering if you could point me in the right direction as far as Nei Gong training. My understanding is there is 36 different sets of Nei Gong movement. I already purchased Bone Marrow Nae Gong and have the book Tendon Nei Gong. Is the dvd different for the tendon Nei Gong then the book? Also, I was wondering if you had any dvds on Bagua walking. Do you have any more available? Also I was wondering if you had any books or dvds on U dong Myung SOng