The butterfly arrives lightly, but the dream never returns. The crow of birds disturbs old dreams, who do you know who the old friend is? + Since one takes the heart as a slave, dreams come from the heart, desires come from dreams, madness comes from desire, madness comes from madness, and beasts come from madness. In fact, the dream contains your past and present lives, your love and hatred, and your anger, ignorance, and resentment. The past life in the dream, the desires in the dream, the resentment in the dream, and the sexual desire in the dream are all collected by Meng Sansi.