jiǎ yǐ
first two of the ten Heavenly Stems 十天干[shi2 tian1 gan1]
甲
jiǎ
first of the ten Heavenly Stems 十天干[shi2 tian1 gan1]
乙
yǐ
second of the ten Heavenly Stems 十天干[shi2 tian1 gan1]