there are 20 Animals to practice in Kai Sai Hsing-i. The Animals are short sequence that pertain to a similar energy as one of the five elements. Each Element had four Animals. The Dueling is very hard to practice safely as the elements through a lot of body power into the energy. When you purchase, they will send me the order, and I will send you the link to download it. So you may not get a response instantly as I may be away from the office teaching. I will get to it and send it within a few hours, if not sooner. In Kai Sai method of Hsing-i we practice 20 animals. A representative movement is combined for the 20 Animals to make a 20 minute form along with the five elements. The duels teach great martial art positioning in regards to using the Hsing-i projections in knocking people to the ground.