...偏师 military auxiliaries (archaic) 千钧一发 a matter of life or death; imminent peril; a thousand pounds hangs by a thread (idiom) 牵一发而动全身 ; the butterfly effect ..
abstract:Imminent peril, or imminent danger, is the legal concept of unacceptable conditions urgently needing corrective action. The principle allows people to act instinctively, without concern for recrimination.