咚咚

咚咚	Dōng dong	Dongdong, cheerleading mascot of 2008 Beijing Olympics
咚咚	dōng dōng	(onom.) thud / thumping / thudding / pounding
咚	dōng	(onom.) boom (of a drum) / knock (on the door)
咚	dōng	(onom.) boom (of a drum) / knock (on the door)