the 10 heavenly stems 甲, 乙, 丙, 丁, 戊, 己, 庚, 辛, 壬, 癸 (used cyclically in the calendar and as ordinal number like Roman I, II, III)
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十天干|十天干[shí tiān gān]► the 10 heavenly stems ↑甲, ↑乙, ↑丙, ↑丁, ↑戊, ↑己, ↑庚, ↑辛, ↑壬, ↑癸 (used cyclically in the calendar and as ordinal number like Roman I, II, III)