kāi tiān pì dì

ㄎㄞㄊㄧㄢㄆㄧˋ ㄉㄧˋ

HSK 7-9core 10k

1(fig.) unprecedented; first of its kind

2(lit.) to split heaven and earth apart (refers to the Pangu 盤古|盘古[Pan2 gu3] creation myth) (idiom)