Old age means when you are very old.
Pinyin: mào dié zhī nián.
Interpretation: Old: about eighty or ninety years old. Chu: Age is seventy years old. An octogenarian refers to a very old person.
Source: Cao Cao of the Han Dynasty's "Drinking Song": "Everyone can live to the end of his life. The blessings extend to plants, trees and insects." Translation: The elderly can wait until the end of their lifespan and pass away, and even plants, trees, insects and fish are benefited.
Extended information:
Alias ??for age:
1. Infancy: newborn.
2. Child, total angle, and vertical tail: childhood.
3. The Golden Hairpin Year: A woman is 12 years old.
4. The Year of Cardamom: The woman is 13 years old.
5. The age of haircut: a woman is 15 years old.
6. Jasper Years: The woman is 16 years old.
7. The peach and plum years: The woman is 20 years old.
8. Flowery years: The woman is 24 years old.
9. The weakest year: a man is 20 years old.
10. Thirty years of age: A man is 30 years old.
11. The age of forty: A man is 40 years old.
12. The year of knowing one’s fate: A man is 50 years old.
13. Sixtieth Year: A man is 60 years old.
14. Seventy Years Old: The man is 70 years old.
15. Happy birthday: The man is 77 years old.
16. Stick direction: 80 years old.
17. Old age: 80~90 years old.
18. Mi Shou: The man is 88 years old.
19. The year of Qibei: 90 years old.
20. Baishou: A man is 99 years old.
21. Year of Yi: A man is 100 years old.
22. Tea longevity: The man is 108 years old.