zhen1 

frz.:
vrai
véritable
authentique, réel
vérité, réalité
sincère
inné
nature originelle
zhen1 ren2: homme authentique élevé au rang du immortels

Possible meanings of nowaday
true, truly
real, really
genuine, unfeigned
indeed,
clearly, unmistakably,
thoroughly.-
used by buddhists and taoists somewhat as orthodox confucianists use  cheng2 sincere,honest - spiritual, divine , - as one's nature;
ethereal, immortal,
-substantial appointment to office, as opposed to a temporary post, -a portrait
a zhen ren is no longer ruled by what he sees, hears or feels