What does it mean that one eyebrow is long enough to cover ten thousand tons of grain?

One eyebrow can reach ten thousand tons of grain, which is the pursuit of health and longevity. This sentence means that if a person has a few long eyebrows, it is very good in the eyes of the ancients, even more precious than 10 thousand loads of grain. Because in ancient times, food was the main symbol of family wealth, and long eyebrows were considered as a symbol of longevity and health. So this proverb expresses the admiration and pursuit of health and longevity. There are some long eyebrows in the eyebrows, which are also called "eyebrows" by the people. In the eyes of the elderly, the elderly have "eyebrows", indicating that this person is easy to live long. Wandanliang is an adjective. In the past, some people said that they had money, and they would say that Wandan grain was a lot of food that could not be eaten.