The age of sixty refers to the age of sixty, so the age of sixty refers to the elderly who are already sixty years old.
Sixtieth is a noun, but the meaning of this word refers to a person's age title, such as twenty weak crown, thirty thirty, etc. When you reach the age of sixty, you have entered the boundary of middle-aged and elderly people. "Sixty and ears are smooth", sixty years old is also called "sixty years old", which comes from the spoken language. In the ancient Chinese calendar, a cycle of sixty years is called a Jiazi.
Poems describing the sixtieth year:
1. After sixty years of old age, I put my family on an iron-headed boat again. ——"Fa Yixing" by Zeng Ji in the Song Dynasty
Translation: Although I am already sixty years old, I still have to drag my family and board the ship for a long journey.
2. Sixty years have passed, and from now on we will be in our sixtieth year. ——"The Shadow of a Candle Shakes Red" written by Chen in the Song Dynasty
Translation: In the sixty years of time, from today onwards, people with a sixty-year-old heart begin again. ?