malicious
Buddha's mouth and snake's heart, a Chinese idiom, Pinyin is f ó K ǒ ush é x ī n, which means the mouth of the Buddha and the heart of the snake; although the metaphor sounds good, the heart is very vicious. From the five Lantern Festival.
The origin of Idioms
Volume 20 of five Lantern Festival yuan written by Shi Puji of Song Dynasty: "all Buddhas were born, robbed and killed, their ancestors came to the west, blowing wind and setting fire, good knowledge in ancient and modern times, Buddhists' tongue and snake's heart, and the monks of the world threw themselves into the cage."
Idiom usage
It is used as complement and attribute. The seventieth chapter of the complete biography of Shuoyue written by Qian Cai in Qing Dynasty: "although I look ugly, my heart is kind, not like your heart."
malicious
like " cutting and grinding " stones -- to learn from each other - rú qiē rú cuō