倒灌

倒灌	dào guàn	to flow backwards; to flow in the reverse direction
倒	dǎo	to fall; to collapse; to lie horizontally / to fail; to go bankrupt / to overthrow / to change (trains or buses) / to move around / to resell at a profit
倒	dào	to invert; to place upside down or frontside back / to pour out / to tip out; to dump / inverted; upside down; reversed / to go backward / contrary to what one might expect; but; yet
灌	guàn	to irrigate / to pour / to install (software) / to record (music)