手穿口袋世界垮了都没你事
[shŏu chuān kŏu dài shì jiè kuă le dōu méi nĭ shì]
'If the world crumbles, it has nothing to do with me, my hands are deep in my pockets.' An aloof attitude indicating self-isolation, non-involvement in external issues and indifference to the outside world.