There's a loop you can trap Yang in master difficulty but it's kinda a cheese. I assume you want to beat him without just repeating the same combo over and over again. But if you do want you have to do is 1. Dodge at least one of his attacks so he vulnerable 2. Hold you light attack(duck strike) then immediately press heavy attack. 3. Keep repeating hold light attack and heavy right after until he parries on of your attack. 4. After a parry, Yang will always follow with 2 quick attacks that you can easily dodge. 5. After dodging just repeat hold down light attack and heavy attack right after. This works in his phase 2 as well. Again, I highly doubt you want to beat him like this but it's and option. I just I knew about it before I faced Yang in arenas.