Xin Zhao is one of the most capable melee characters in the game. Early game, few characters are as capable of setting up ganks and dealing quick damage. Late game, Xin can carry your whole team. Any fed character can completely dominate, but Xin (especially with this build) makes it quite easy to be fed if you keep your wits about you and start munching on the noobs and squishy player with no cc.

Pros
Distance closer
Knock up
Group slow
Natural heal
Unstoppable when fed
Lanes well with stunner
good fighter with lifesteal

Cons
A bit slow without items
Vulnerable to cc (that's why u need cleanse)
exhaust(that's why u need cleanse)
Not a good group fighter
No escape mechanism (except speed) (that's why i fight to the death)

get blue and red, dragon at lvl 10 with teams when u have to the chance but not in the beginning and xin is not a fast jungler.

His skill are easy to use w, e, than q when u want to engage the squishy, but if it's two vs 1 and the tank is fighting u and the squishy(carry) is in the back u kill squishy with exhaust and e than come back to face the tank with lifesteal and u get double kill. Not a good situation if it's 3 vs 1 unless u are very fed with guardian angel.

For the item i get cloth armor with some potion first and later get shoes and finish the lantern build, get one more Vampiric Scepter, than get IE and get zeal and turn scepter into excutioner's caller for more lifesteal and crit. And than i finish it with PD, If u are doing good at this point u can either get more lifesteal like Bloodthirter or into guardian angel. At very late game my finish build will be 2BT, IE 2PD, and Guardian angel, if Guardian angel expire get another BT and buy and sell guardian angel with BT depending the sitution. But the Game never last that long. Most of the time i finish the game before i get my 6 item.