What did BE and BG in Wang Daowen mean?

In Wang Daowen's book, there were two common ways to classify people. Being meant that there was a strong emotional entanglement and love between the male and female protagonists. The male protagonist would often be firm in his feelings for the female protagonist, and the female protagonist would also experience a series of tests and struggles to finally reach a happy ending. This kind of writing style usually showed the affection of the male protagonist and the bravery of the female protagonist, allowing the readers to feel the power and beauty of love. BG meant that there was no emotional entanglement between the male and female protagonists, or that the male protagonist's feelings for the female protagonist were not unwavering, but there were some other factors at work. This kind of writing style usually showed the independence and strength of the female protagonist and the tenderness and complicated inner world of the male protagonist. This style of writing usually focused more on the storyline and character creation, allowing the reader to feel the interactions and emotional changes between the characters.