甲之蜜糖,乙之砒霜

jiǎ zhī mì táng , yǐ zhī pī shuāng

one man's meat is another man's poison (idiom)

jiǎ

first of the ten Heavenly Stems 十天干[shi2 tian1 gan1]

zhī

(possessive particle, literary equivalent of 的[de5])

honey

táng

old variant of 糖[tang2]

,

second of the ten Heavenly Stems 十天干[shi2 tian1 gan1]

zhī

(possessive particle, literary equivalent of 的[de5])

arsenic

shuāng

frost