吴越同舟

wú yuè tóng zhōu

to collaborate towards a common end

Wu and Yue in the same boat (idiom); fig. cooperation between natural rivals; in the same boat together

吴

wú

area comprising southern Jiangsu, northern Zhejiang and Shanghai

越

yuè

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

同

tóng

like

舟

zhōu

boat