generous outside but scheming inside
Chinese idiom, Pinyin is w à iku à NN è ISH à n, which means broad in appearance but deep in reality. It comes from the biography of the lord father of Marquis Pingjin in historical records.
The origin of Idioms
Sima Qian's biography of the lord father of Marquis Pingjin in historical records in the Western Han Dynasty: "Hongwei is taboo, broad outside and deep inside. Those who have tasted and experienced great things, though they are detailed and good, will report their misfortunes
Idiom usage
It is used as predicate and attributive
generous outside but scheming inside
kill the chicken to frighten the monkey - shā jī hài hóu
a mirage , insubstantial objects - jìng huā shuǐ yuè