Play defensive and last hit

First you buy boots of speed,
1.boots of speed
2. 3 health potions-heals for beggneing max Mediate and yuju
3.Berserker's Greaves-25 attack speed
4.Yhomuu's ghost blade-activate with Yuju.%50 attack speed,30 damage,15 critical stike,and faster,And pless ult
5.Infinty Edge for the Critical Strike and Damage.
6.3 vampire scepter-For the life steal then build it into a Bloodthirsters


Please tell me what you think of the build

That would be a good build.

I think it would work lets give it a try.

Thanks for telling what you think

My master yi build
1. Dorans ring (doesn't matter if you're AD or AP, it gives you HP and mana sustain so you can spam dat Q all day)
2. boots obviously(mercs or tabi, zerkers are for attack speed hoarders ^-^)
3.BF sword
4. brutalizer
6. zeal
7. infinity edge
8. yhomuus.
9. phantom dancer

and whatever the hell else you need, above are what i think as necessities

And if you reach endgame, sell everything and go 3x phantom dancer, 2x bloodthirster, and 1 IE, YOU WILL NEVER DIE IN A ONE ON ONE FIGHT.

I might try that build thanks for letting me Know,

I used to do that. But I changed my game play style from time to time... although whatever I change IE and PD is a must.
other equips are pretty much optional in my opinion really depends on what kind of player you are. 99% of the time...... people bait me......... SIGH because they are all chickens with zero wins. Yes I run into people with zero wins at level 30 all the time SIGH.
and I probably be Tank Yi which is pretty hilarious because I would still get heaps of kills :P

Nop. Try to get the most out of his ability and come with a stronger early game and disastrous late game.

Start boots+ 3 pots, or Dorans ring

Get some sustain with an early Vampiric Sceptar, and work towards and early phage+Brutalizer

Buy Zeal, and a BF sword

Finish Phantom Dance and either Bloodthirster or Infinity Edge

Complete Youmuu's and Frozen Heart

Now you have boots (Either Berserkers or Mercury Treads because Berserker gives attack speed, and Mercury treads give tenacity and cc is the worst for master Yi. Ninja Tabi is not very useful) and PD, IE/BT, FM, YB

Your last item will be situational
if you went Infinity Edge, you MUST get BT
Guardians Angel if you die too quickly
Phantom Dancer if you simply want to be able to destroy anybody caught alone
Second BT lets you survive longer from lifesteal (and yi's farm will let you have more AD than IE's)

Laning Yi is not viable. The only viable AD Yi is jungle Yi.

Start Cloth 5 HP Pots or Vamp Scepter.
Wriggles
Mercury Treads
Zeal
Infinity Edge
Zeal > Phantom Dancer
Quicksilver Sash/Warmogs Armour
Guardian Angel/Atmas Impaler
Wriggles > Bloodthirster (Optional)

You are level 16, so building full damage may work well at your level. Once you reach level 30, you will find that Yi is an awful laner because of his lack of sustain, very weak early game and lack of burst damage. Never EVER build more than a single Phantom Dancer, Bloodthirster or any other damage item on Yi, because he has many natural offense mechanisms but no defensive ones, therefore you must build to your weaknesses. Do not listen to people who give you a glass cannon build and say that lifesteal will keep you alive in a team fight and will allow Yi to be unbeatable 1v1, because the game is not about 1v1, and even if it was, Jax would easily destroy Master Yi in two hits because Jax is a better duelist than Master Yi.

Quicksilver Sash provides good magic resist, and the active allows you to escape CC which is Master Yi's biggest weakness. Guardian Angel gives armour and magic resist plus a revive so even if you do get focused in a team fight, you can come back to life and continue fighting. The Atmogs combo allows you to become tanky while giving AD and crit.