骑虎之势 (騎虎之勢) qíhǔzhīshì

qíhǔzhīshì set phrase a situation like riding a tiger; a difficult situation
Domain: Idiom 成语
Notes: A variant of 骑虎难下 (Guoyu '騎虎之勢'; Mathews 1931 '騎虎之勢', p. 68)