Tamkang University Chinese Department lecturer Pu Chung-cheng, himself a Tsao, discovered that in the 1300-plus word dictionary compiled by Nevsky, there are many words that even Tsao themselves no longer know.
出身曹族的淡江大學中文系兼任講師浦忠誠發現，涅瓦斯基收錄一千三百多個字的字典，有些詞彙，連今天的曹族人都不知道了。