decisive(be above suspicion; without all doubt)

undeniable(indisputable; past dispute; there is no denying the fact)

fear the enemy as if he were a tiger

the four treasures of the study

assertion against one's own conscience(obviously insincere talk)

out of absolute necessity(have no alternative; the only thing possible; as a last resort)

indisputable(unquestionable; irrefutable; incontestable)

rack one’s brains without results(damp squib; scheme without avail)

be bottled up like a turtle trapped in a jar(be hopeless like a rat in a hole)

All sounds are hushed.

the filth(the mire/muck)

the entrails/viscera

gentle and kind

filthy speech(bestial words)

be of no reputation

stop at nothing in doing evil

military expertise/strategy

watch ,hear, ask and touch (a diagnosis method)

do nothing to deserve the favour

too softhearted