“无情剑”是什么东东？

无情贱呀，贱的最高境界

                  ,
                 / \
                {    }
                p    !
                ; : ;
                | : |
                | : |
                l ; l
                l ; l
                I ; I
                I ; I
                I ; I
                I ; I
                d | b
                H | H
                H | H
                H I H
        ,;,      H I H      ,;,
       ;H@H;     ;_H_;,    ;H@H;
       `\Y/d_,;|4H@HK|;,_b\Y/'
        '\;MMMMM$@@@$MMMMM;/'
          "~~~*;!8@8!;*~~~"
                ;888;
                ;888;
                ;888;
                ;888;
                d8@8b
                O8@8O
                T808T
                 `~` 下不留情