開天闢地

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

day / sky / heaven

-ly / structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

earth / ground / field / place / land / CL:片[pian4]

to open / to start / to turn on / to boil / to write out (a prescription, check, invoice etc) / to operate (a vehicle) / carat (gold) / abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2] / abbr. for 開本|开本[kai1 ben3], book format

to open (a door) / to open up (for development) / to dispel / to refute / to repudiate