In philology, both ‘sincerity’ and ‘cheng’ primarily mean, ‘to be true to oneself’. As a philosophical term, ‘sincerity’ roots in Aristotle’s ‘aletheutikos’. In medieval Europe, it is regarded as a neutral value that may either serve or disserve for ‘truth.’ As for Romantics, it is a positive value, and an individualistic concept whose two elements ‘true’ and ‘self’ refer to a person’s ‘true fe...