[得鱼忘筌 / 得魚忘筌, dé yú wàng quánㄉㄜˊ ㄩˊ ㄨㄤˋ ㄑㄩㄢˊ] lit. catch fish then forget the trap (成语 saw, from Zhuangzi 莊子|庄子); fig. to take help for granted, See Also: 成语, 莊子, 庄子#406845
[ちゃせん, chasen] (n) (1) tea whisk; bamboo whisk for making Japanese tea; (2) hair style where the hair is tied up in a bundle on the back of the head (resembling the shape of a tea whisk)