This Guide will handle the Carry Slaughtering part of Xin Zhao, for everything else read the following guide: http://www.mobafire.com/league-of-legends/build/jungle-zhao-in-depth-pubstomping-134729

I've been playing him for a while now, and I LOVE HIM since the latest patch!

Laning Phase:
Ganking, ganking, ganking and ganking!

Teamfights Phase:
SLAUGHTERING ENEMY CARRIES!

How?:
Slow - Knockup - Knockback - BURST DAMAGE

First lets discuss the boots choice.

Mercury's Treads:
CC or AP Heavy Team

Ninja Tabi:
AD Heavy Team

Mobility Boots:
Optional


Next I'll explain why I take Wriggle's Lantern first:
1, Very cheap for the stats it gives.
2, Free wards.
3, You need every stat on it as jungler
4, You start with Vampiric Scepter

Try place ward at enemy blue or red buff, I gained so many kills from doing this...


Other Items:
Phage: Slow, health and damage - great for ganking.
Youmuu's Ghostblade: IMO best item on Xin Zhao - pop it mainly after knockup
Black Cleaver: Epic for slaughtering carries!
Warmog's Armor: Health is mandatory on xin zhao, you dont need resists as you get them from your ulti.
Atma's Impaler: I never managed to get all 6 items, so didn't add this to main build.

Optional:
Wit's End: VS AP heavy team ( instead of Black Cleaver )
Frozen Mallet: If enemies keep getting out of your reach ( instead of Warmog's Armor )

Personally I start at red, because xin zhao doesnt really need blue and can easly kill someone at level 2. Kill Wraiths, get a pull on red and get the red buff. You will be level 2 and ready for your first gank.

If your red is north then gank top or mid first, if your red is south then gank mid or bot first ( kinda obvious ).

Approach your enemy, DO NOT USE Charge if you can reach your enemy without it! Wait till he flashes and THEN use charge! If you start with charge, use 1 auto attack and then pop q first instant next autoattack and knock him up and pop his flash or kill him.

This is where Xin Zhao really shines, because a good Xin Zhao WILL kill the enemy carry, even if it costs his own life! An enemy team without carry, fighting your team with a carry, is a dead enemy team ;)

Here comes the in-depth part:
Level 18 Xin Zhao vs Level 18 Graves

Xin Zhao:
240 Attack Damage (138 bonus) * 15% Crit Chance = 276 Attack Damage
30 Armor Penetration + 45 Armor Reduction + 15% Armor Reduction
Attack Speed 1.2 per second

Skills:
Three Talon Strike: 240 + 75 + 138 * 15% crit chance = 521 damage
Battle Cry: 80% Attack Speed Bonus
Audacious Charge: 250 Magic Damage
Crescent Sweep: 325 + 138 = 463 damage

Graves:
Health: 2060
Armor: 92
Magic Resistance: 30

First of all let me explain how damage reduction and armor penetration/reduction works:
Damage reduction
100 / (100 + armor) so if enemy has 40 armor it's 100 / 140 = * 0.714 damage reduction.

Reduction Order:
1. Flat armor reduction
2. Percentage armor reduction
3. Flat armor penetration
4. Percentage armor penetration

Let's start a combat simulation:
This is WITHOUT red buff or red potion!

You jump on him with Audacious Charge ( Don't do this vs Corki or EZ, just run to them because they WILL jump out of your reach so you'll have to waste a flash ) = 192 damage on 30 magic resists
Graves will have 92 - 30 - 15 - 15% armor = 40 armor and 1868 hp left

You pop Crescent Sweep for 463 * 0,714285714 = 331 damage and 1868 hp * 0.15 * 0.714 = 200 damage.
Graves will be seperated from his team and will have 92 - 30 - 30 - 15% = 27 armor and 1337 hp left.

You auto attack once for 276 * 0,787401575 = 217 damage
Graves will have 92 - 30 - 45 - 15% = 14 armor and 1120 hp left.

You pop Three Talon Strike right after the auto attack for an instant 521 * 0,877192982 = 457 damage. this 3 times in a row so 1371 damage = DEAD GRAVES If he's not dead because of heal, exhaust or lifesteal then he will be dead before the knockup is over.

All this happens before your 2 seconds slow is over, because you'll have insane attack speed because of Battle Charge and Youmuu's Ghostblade

Once graves is dead, GTFO because they will kill you, or if they are running - kill the rest :)