+4 = 9

ㄍㄨㄟˇguǐ

ㄍㄨㄟˇguǐ
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, deca
Decyl, Decylgruppe (S, Chem)​, der zehnte der zehn "Himmelsstämme" des chinesischen Kalenders (S)​, Gui (Eig, Fam)​
car. cycl.