元·王子一《误入桃源》第二折:“水呵抵多少长江后浪推前浪，花呵早则一片西飞一片东，岁月匆匆。”

长江后浪推前浪 ( cháng jiāng hòu làng tuī qián làng ) 比喻事物的不断前进。多指新人新事代替旧人旧事 。

fig. the new is constantly replacing the old; each new generation excels the previous; lit. the rear waves of the Yangtze River drive on those before (idiom); (of things) to be constantly evolving