hé bù
why not?
why not do (sth)?
hé bù shí ròu mí
lit. "Why don't they eat meat?" (said by Emperor Hui of Jin 晉惠帝|晋惠帝[Jin4 Hui4 di4] when told that his people didn't have enough rice to eat)
fig. (of people from higher class etc) to be oblivious to other people's plight