蹿房越脊

cuān fáng yuè jǐ

lit. to leap the house and cross the roofridge (idiom); dashing over rooftops (of robbers and pursuing knight-errant 俠客|侠客 in fiction)

蹿

cuān

to leap up

房

fáng

house

越

yuè

generic word for peoples or states of south China or south Asia at different historical periods

脊

jǐ

(bound form) spine; backbone