胯下之辱

kuà xià zhī rǔkuaxiazhiru

1. (lit.) the humiliation of having to crawl between the legs of one's adversary (as Han Xin 韓信|韩信[Han2 Xin4] supposedly did rather than engage in a sword fight) (idiom)
2. (fig.) (endure) utter humiliation

Study it in Yanamino