you lp mantis slash over and over again. Just the first part. It goes like to 30-40 hits if you get it consistently I think. It also does guranteed chip which is almost impossible to tech out of. It doesnt do alot but it will annoy the fuck out of someone. You can vary the timing on the mantis slashes so the opp will probably never parry out. If you think you see a parry just do 2 mantis slashes back to back. Just never end the mantis slashes cause youll lose your frame advantage. After yang does the lp mantis slash, obviously hell shadows will follow it. When the non shadowed yang gets back to standing frames just repeat the first slash.
he does have a guranteed setup I believe. I think its like c.mk slash slash slash, acitivate seinbu, HK teleport, unblockable, c.mk canceled into short teleport, c.mk unblockable. After this first unblockable I like to throw like 2 mantis slashes to keep them holding back before I land the unblockable. I think its also possible to keep on doing the unblockable once you land the first one. Also after the first unblockable and you teleport you can be throws\jabbec etc. The more often you mix the opp up the more likely youll get away with the teleport.
I think if you catch an air reset right you can activate before the opp hits the ground and just open up with repeated unescaeable mantis slashes. Close s.mk activate would probably work too. Its more of yun trick though but it could keep the opp on the ground long enough to get the unblockable in. If not the unblockable at least the mantis slash strings.
Ending the seinbu right will give you 60% of meter back. A dive kick then combo string or a lucky c.mk slash slash slash will give you full meter. Then just repeat the chip shit and watch the opp try to get out of it. You can also just work off the slash frames and if they to escape end the slashes and repeat the frame advantage until you get a meter again. Very cheesy when you get 2 meters in less than 15 seconds.