2. The crane is a kind of longevity bird. It is said that the crane has infinite life, and it is regarded as the king of longevity like the tortoise. Later generations often use "He Shou", "He Ling" and "He Shu" as birth words.
3. There was a system of dividing officials by filial piety in Han Dynasty. Therefore, in ancient times, children often took cranes as the theme when celebrating their elders' birthdays. The names "Songhe Changchun" and "Heshou Songling" symbolize the health and longevity of the elderly.
4. The ancients often compared graceful white cranes to people with high moral character, and called a person who leads an honest and clean life "He Ming". Noble people naturally take cranes as their companions, endowing them with the connotation of noble feelings and becoming a symbol of lofty sentiments and aspirations of celebrities.