Museum experts discovered that a favorite painting from the Yuan dynasty (1279-1368), which he had covered with imperial seals and comments, was really a copy and the alleged imitation was the true original. "A lot of us were happy the original was lucky enough to have escaped the emperor's eye and keep its original appearance," Na remarks.
這是一段有名的公案；當年深受鍾愛，滿題御筆的元代黃公望「富春山居圖」在博物院成立以後的審查中，竟被鑑定為偽作，而原本被視作贗品的那幅畫，才是真跡。