hei! interj.
哀哉。吁嗟。— mihi! 哀哉我也。— amice 哀哉吾友。
Joaquim Affonso Gonçalves, Lexicon Magnum Latino-Sinicum, 3rd edition (Peking: Typis Congregationis Missionis, 1936 [1st ed. Macau, 1841]). Digitized at Dickinson College, 2023.