Zhang has immense power and deceivingly fast hands. I think he turned pro so late and so old, he just didnt care about working on conditioning whatsoever. Zhang when allowed to fight at a slow pace, beats most. The minute you make him even slightly work at a pace he doesnt want to, that stamina drains quicker than the water coming out of a tap. Extremely fun heavyweight for 4/5 rounds though. Always said one of my fantasy match ups for be Gassed Zhang vs Gassed David Price. Comedy gold. No punches thrown, just two slugs trying to catch oxygen.