What is the moral of cranes and pine trees?

Cranes and pine trees symbolize longevity, auspiciousness, purity and loyalty. In the traditional culture of China, pine trees are regarded as a symbol of immortality, while cranes are regarded as a symbol of longevity, so they are often used together to symbolize longevity, auspiciousness, purity and loyalty. Pine crane prolongs life, which means prolonging life, or aiming high.