不知何故

somehow

no; not so / (bound form) not; un-

not to know / unaware / unknowingly / fig. not to admit (defeat, hardships, tiredness etc)

to know / to be aware

surname He

what / how / why / which / carry

what for? / what's the reason?

happening / instance / reason / cause / intentional / former / old / friend / therefore / hence / (of people) to die, dead