The Ziyuan is notable for having the first occurrence of the Chinese borrowing ta (塔; tǎ; t'a; "tower; pagoda"). Feng (2004:205) classifies ta as a "monosyllabic phonemic loanword," and notes:
塔/ta/=浮屠/futu/=浮图/futu/=佛图/futu/=数斗波/shudoupo/=兜婆/doupo/：Buddhist tower: "塔,佛堂也 [The ta is Buddhist tower]" (字苑), "作九层浮图 To build the Buddhist tower with nine levels" (水经注), "塔亦胡言, 犹宗庙也. [ta comes from languages of Hu nationalities, it means tower.]" (魏书). It was borrowed from buddhastupa of Sanskrit. The process of pronunciation change is as follows: Buddhastupastupatupat’ap.