ninth of the ten Heavenly Stems 十天干[shi2 tian1 gan1]{sap6 tin1 gon1} · ninth in order · letter "I" or Roman "IX" in list "A, B, C", or "I, II, III" etc
Meanings
1ninth of the ten Heavenly Stems 十天干[shi2 tian1 gan1]{sap6 tin1 gon1}
2ninth in order
3letter "I" or Roman "IX" in list "A, B, C", or "I, II, III" etc