What do you mean, there is no Jiazi in the mountains, but you know Jiazi's age when you are cold?

The first meaning: living a free life in the mountains, carefree, without the concept of time, unconsciously, a year has passed.

The second meaning: Jiazi counts the years, but there are no years in the mountains. Although the weather is getting colder and warmer, I don't know if it is the New Year.

The third meaning: The ancient calendar of China used heavenly stems and earthly branches to mark the year. There is a saying in the first poem of The Journey to the West, a classic literary masterpiece, that "there are no children in the mountains, and the cold does not know the year". The "Jiazi" mentioned here refers to the calendar that marks the year with trunk branches. This means that because there is no calendar in the mountains, the slight cold and the great cold in the 24 solar terms have passed, and I don't know that the Spring Festival is coming.

I hope I can help you.