I am learning TCC according to the principles from Yang Cheng Fu (YZD, FZW). What do you mean about Ip Tai Tak principles? In his book one year ago, he wrote about principles in TCC. What do you mean about this principles? Are they realy same as YZD principles? What do you mean about energy messaures from every single step in form? Once i saw this form from Ip tai Tak and it is very different from YZD form. The principles are not exactly the same.What do you mean about this?