The true meaning of the green bird could be explained from different angles. In literature, blue birds were often described as mysterious and sacred creatures that represented hope, spirituality, and happiness. In many fantasy novels and myths, blue birds were associated with souls, magic, and mystical powers. In modern Chinese, the word "Qingniao" was also used to describe some beautiful things such as friendship, love, happiness, and so on. Therefore, the meaning of blue bird may vary according to time and context, but it is a word with rich cultural implications.