A little info on how you can use the skills:
1.You should first max. the Taolu Assault because is both a good farming tool and damaging enemies. But don't try to use Warrior's Will and Taolu Assault on a god near the creeps in early game because you will remain with low hp very fast or even die.
2.While max-ing the Taolu Assault, Tranquil Gift should come along when pausing from the third skill and be maxed afterwards. Many of you would say "it's a useless skill, it gives very low hp and consumes a lot of mana if you want to fully replenish your health". It is wrong, this skill will enormously help you and your lane mate to maintain rhythm and not go back to base to refresh MP/HP + you have Meditation, but, of course, you should always use mana wisely.
3.The best combo I usually use (after I buy Gem of Isolation) is:
Tactician's Advantage, normal hit till stun goes off (there is no need of using all your abilities all of a sudden) Warrior's Will (most of the Gods have Leap/Dash/Speed giving skills that will help them escape) Taolu Assault (Now it gives slow because of Gem of Isolation) Warrior's Will again and then normal hitting. If the enemy doesn't die, well, too bad for you, but try repeating from Warrior's Will then Taolu Assault.
4. Warrior's Will is only good for slowing and last hitting as it does not do as much damage as Taolu Assault that debuffs the enemy of protections, buffing you instead. W. Will will only go to the max of 500-550 damage, which is not that much in late game, and the enemy will have armour, which of course will decrease the damage.
***If you don't like this build you can check the other one, it's an offensive build***
I'll try to update the guide when it will need to be updated, till then, have fun playing Gaun Yu, The Chinese Saint Of War ^_^