Saying that a person's inner black velvet is praising a person's inner qualities or personality traits. According to the query related information, "black velvet" is an adjective that is usually used in Chinese to describe someone's inner qualities and temperament, which has the meaning of mysterious, noble and elegant. The use of the adjective "black velvet" is usually in praise of a person, for example, "His inner black velvet makes people involuntarily attracted", "Her deep and introverted temperament is a typical black velvet quality. "and so on.