Going over the long-tasseled sword yesterday, I had a temper tantrum. Yang Shifu, as usual, was driving me CRAZY picking on every single mistake, changing things (and insisting nothing was different). I yelled at him ("But this is what you taught me last week!). He laughed at me (No!). He looks amused when I have a temper tantrum. An old dragon laughing at a younger one. Later on, as if to mollify me, he compliments me on a move by saying "Perfect!"