Zhang JuncaiZhang Juncai is one of the world's tallest people, standing at least tall. He is notable for visiting Yao Defen.BiographyHe is from Shanxi Province, China. Zhang was verified as China's tallest man on 23 November 2010 at. He went to the hospital in April 2009, to visit his friend, the tallest living woman Yao Defen.