消长

消长	xiāo zhǎng	to ebb and rise / to decrease and then grow
消	xiāo	to diminish; to subside / to consume; to reduce / to idle away (the time) / (after 不 or 只 or 何 etc) to need; to require; to take
长	cháng	length / long / forever / always / constantly
长	zhǎng	chief / head / elder / to grow / to develop / to increase / to enhance