1, DDF, an online buzzword, is the abbreviation of English DeepDarkFantasy, which is generally translated as "deep dark fantasy" and expresses the dark ♂ dark will of users.

2. Source: Dark ♂ Black Interview from Van_

3. Note: An empty ear means "My brother washed it upside down", so use it with caution. Van_ believers have a saying that "the holy word cannot be empty".