真心假意
[zhēn xīn jiă yì]
These characters form a paradox. Translating directly from Chinese, 'zhēn xīn jiǎ yì' means 'sincere heart false mind', which describes someone's feelings or behavior as being contradictory: seemingly sincere but actually insincere deep down. As a user's nickname on social media, etc., it suggests the person is perhaps skeptical about things around them or they like being enigmatic.