When Chiang was young one of his favorite haunts was the banks the West Lake in Hangzhou, and he loved the water shield flowers that bloomed there in the fall. He took the phrase "water shield flower waves" from a line of Song-dynasty poetry and used it to fashion Chou Cheng's moniker, since it echoes the meaning of Cheng: clear water.
原來江兆申早期在大陸任職的地點就在杭州西湖畔，他非常喜愛秋季時西湖裡盛開的蓴菜花，就以「雙槳蓴波」的詞句，取「蓴波」二字來對應周澄的「澄」字。