visa question. hi my passport expires in 2 october 2018

i am going china on this 18 march with my china entry permit which expire 30 april 2018. the visa grants me 30 days stay. i am leaving 24 march. will there be problem since the entry permit is validity on the last 30th day is less than my passport 6 month valid period. I assume it wont be problem since i am leaving 24 march with my booked ticket?