Two ends off
The two ends of the sharp pole is that the two ends of the sharp pole can not pick things. It's a metaphor for failure at both ends.
The third fold of Yuan's Guan Hanqing's "save the wind and dust" is: "that woman was photographed by me on weekdays. If she had a divorce letter, she would have gone with a cigarette. If she didn't marry me, she wouldn't have to take off her two ends." example: you're afraid that you can't figure it out in a thousand ways, but you're afraid that you'll make us do it. The first fold of Qi Ying Bu by Wu Ming Shi in Yuan Dynasty
Two ends off
be in a fix the horns of a dilemma - jìn tuì wéi gǔ