cranes and pine trees symbolize longevity, auspiciousness, purity and loyalty. In the traditional culture of China, pine trees are regarded as the symbol of immortality, while cranes are regarded as the symbol of longevity, so they are often used together to symbolize longevity, auspiciousness, purity and loyalty. Pine cranes prolong life, which means prolonging life or being lofty for the sake of ambition.