+4 = 9 

ㄍㄨㄟˇguǐ

  1. 天干末位

  2. 婦女月經參見癸水

tenth of the ten Heavenly Stems 十天干[shi2 tian1 gan1], tenth in order, letter "J" or roman "X" in list "A, B, C", or "I, II, III" etc, ancient Chinese compass point: 15°, deca
car. cycl.
Decyl, Decylgruppe (S, Chem)​, der zehnte der zehn "Himmelsstämme" des chinesischen Kalenders (S)​, Gui (Eig, Fam)​