This reminds one of what the imperial official Ban Chao once said: "The peoples beyond our gates are not necessarily either filial or virtuous [i.e they don't do things our way], but where the water is sterile there are no fish to be found [some things are worth wading through imperfections to get]."
這也應驗當年班超對繼任西域都使所說的：「外塞人士並非孝子賢孫…… 水清則無魚。」