Three bluebirds, also known as bluebirds, can't meet each other on earth, only hope to meet again in Penglai Fairy Mountain. Penglai has no choice but to rely on bluebirds to deliver messages. The divine bird in China's ancient mythology is bright in color and light in posture. Originally a bird of prey with great strength and healthy flight, it gradually spread into a delicate and dependent bird. Legend has it that there are three messengers of the goddess, the Queen Mother of the West. Also known as Three Birds. Sanqing bird is the predecessor of Phoenix. At first, it was a bird of prey with great strength and healthy flight, and later it gradually spread into a bird with bright colors and light posture. This is an auspicious thing with divinity. Portrait bricks in the Han Dynasty are common on the side of the Queen Mother of the West.