The Black Sheep was a famous novel about a young woman who was deceived by her sister and used by her sister's lover, who eventually betrayed and hurt her. We can get some inspiration from this story: Trust is very important. Trust was the foundation of a good relationship. If there was a lack of trust, then even if the relationship was good on the surface, it would be easy to break down. 2. Have a sense of self-protection. We need to learn to protect ourselves when we encounter unpredictable situations. For example, when we are deceived or betrayed, we need to take appropriate actions to protect ourselves from further harm. 3. Learn to differentiate between friendship and love. Friendship and love are two different emotions. We need to learn to deal with them correctly. If these two emotions were mixed up, then even if it looked good on the surface, it would actually be very easy to break apart. Learn to learn from your failures. When we encounter failure, we need to learn from it and take appropriate actions to improve our behavior and decisions. Only then can we grow stronger from failure. By reading about the black sheep, we can learn a lot about important interpersonal relationships and self-protection, and learn from failure. These revelations can help us better deal with the challenges in life and achieve better results.