骑虎难下

qíhǔnánxià

骑虎难下 — qíhǔnánxià

1. if you ride a tiger, it's hard to get off; fig. impossible to stop halfway

   他已经答应去负责这个项目，现在骑虎难下，只能硬着头皮往前做。 tā yǐjīng dāyìng qù fùzé zhège xiàngmù xiànzài qíhǔnánxià zhǐnéng yìngzhetóupí wǎngqián zuò — He has already agreed to take charge of the project; now it's hard for him to back out, so he can only push forward reluctantly.