The early Taiwanese calligraphy and painting Chang amassed has been enthusiastically received by numerous collectors. Chang, however, feels that his collection is a repository of source material for researching the development of Taiwanese art and the relationship between Taiwanese and Chinese culture. Even if he commanded high prices for these paintings, once they were sold off one by one, it would be exceedingly difficult to track down and study them.
不少收藏家對這批台灣早期的字畫興趣濃厚，但張允中認為這是研究台灣美術發展及台灣與中國文化淵源的第一手文史資料，若零零散散割愛，就算能求得高價，將來想再一一找來參考、研究，恐怕不易。