So, here's the thing: I play Xin Xhao weird. I usually rush lifesteal, and apparently you should be rushing armor pen or damage. I don't care what you are "Supposed" to do, though :3 I play league pretty much strictly for fun, so most of my guides will be like this. If you have a different opinion on how he is supposed to be built, feel free to post in the discussion.

With Xin, if you are ganking, you need to already have activated your Three Talon Strike, and you need to initiate with your Audacious Charge. Your Battle Cry is used whenever you feel the need and think you can get off all of your attacks. It isn't worth using if you only hit one of your attacks cause you are chasing. Your TTS is on such a short cooldown that you can feel free to spam it, but remember that it should be used to keep enemies from escaping. As for your AC, use that only to catch up if they try to run. The slow lets you get off damage, but try to get as ahead of them as possible.

If you have read this far, you either hate my build or think it is at least decent :3 Either comment is welcome, as this is my first build :D
Thanks,
Maranux