"After Jia Baoyu experienced a dream, he gradually lost all thoughts about the human world." This sentence came from the first chapter of 'Dream of the Red Chamber'. It was something that Jia Baoyu said after lamenting his life experience. The meaning of this sentence was that after Jia Baoyu experienced some dreams, he began to have doubts and no thoughts about human life. He believed that everything should be put down and no longer be obsessed with the gains and losses of the past and the future. The background of this sentence was that Jia Baoyu had experienced many storms in the Grand View Garden and gradually realized the nature of life and the dark side of human nature. The profound meaning of this sentence is that it tells us that in the journey of life, we may experience many beautiful things, but they may also be short-lived. We need to learn to let go of our obsessions in order to truly understand the true meaning of life.