车水马龙 (車水馬龍) chēshuǐmǎlóng

chēshuǐmǎlóng set phrase an endless stream of carriages and horses
Domain: Idiom 成语
Notes: (CC-CEDICT '車水馬龍'; Guoyu '車水馬龍'; Mathews 1931 '車水馬龍', p. 34)