排山倒海

pái shān dǎo hǎi

lit. to topple the mountains and overturn the seas (idiom); earth-shattering

fig. gigantic; of spectacular significance

排

pái

a row

山

shān

mountain; hill (CL:座[zuo4])

倒

dǎo

to fall; to collapse; to lie horizontally

海

hǎi

ocean