Lead the guy on. Keep running from him and dodge his blows. DONT attck him until he hits the ground and stays on the ground, to rest I guess. But if he is up walking around, you'll do about 3 points of damage. If hes on the ground you'll do max.

be aang and use whirlwind attack a couple ties then he will kneel attack him then repeat
it

be aang and use whirlwind attack a couple ties then he will kneel attack him then repeat
it

Go to the nearest market place and buy 10 or 15 chi and energy medicen. Then when you're low just refill and keep battling.

P.S. After this There is an evan harder person to beat.

TPM out

i find it easiest to use sokka. throw your boomerang at him while dodging his attacks and
when he kneels to regain strength, run up and wail on him

you just use some cheats so that it;s easy ^_^