3 8 6 – 5 3 5 ), ▁and ▁further more ▁that ▁the ▁painting ▁was ▁an ▁original ▁commission ▁by ▁Emperor ▁X ia ow en , ▁not ▁a ▁copy ▁of ▁an ▁earlier ▁composition ▁by ▁Gu ▁Ka iz hi ▁or ▁anyone ▁else . ▁ ▁The ▁call ig raph y ▁of ▁Z hang ▁H ua ' s ▁text ▁ins cribed ▁on ▁the ▁painting ▁has ▁also ▁been ▁extens ively ▁used ▁as ▁d ating ▁evidence ▁for ▁the ▁painting . ▁ ▁The ▁call ig raph y ▁was ▁once ▁thought ▁to ▁be ▁by ▁Gu ▁Ka iz hi ' s ▁contemporary , ▁the ▁famous ▁call ig raph er ▁Wang ▁X ian z hi ▁( 3 4 4 – 3 8 8 ), ▁or ▁by ▁Gu ▁Ka iz hi ▁himself , ▁but ▁modern ▁scholar ly ▁opinion ▁is ▁that ▁the ▁call ig raph y ▁was ▁probably ▁added ▁by ▁an ▁anonymous ▁court ▁call ig raph er ▁at ▁the ▁same ▁time ▁that ▁the ▁painting ▁was ▁made ▁or ▁at ▁some ▁time ▁later . ▁ ▁However , ▁as ▁with ▁the ▁painting , ▁there ▁are ▁widely ▁diver gent ▁opinions ▁about ▁when ▁exactly ▁the ▁text ▁was ▁ins cribed ▁on ▁the ▁scroll . ▁ ▁At ▁one ▁extreme , ▁Koh ara ▁Hir on ob u ▁has ▁suggested ▁that ▁the ▁text ▁was ▁not ▁added ▁to ▁the ▁scroll ▁until ▁after ▁ 1 0 7 5 , ▁using ▁a ▁deliber ately ▁ant ique ▁Tang ▁dynast y ▁call ig raph ic ▁style , ▁whereas ▁more ▁recently ▁W en ▁F ong ▁has ▁stated ▁that ▁the ▁call ig raph y ▁of ▁the ▁Ad mon itions ▁Scroll ▁is