Why did Mr. Tao Yuanming plant five willows instead of three or four willows?

This is probably influenced by the "Five Elements" theory of China's traditional culture.

The essence of the Five Elements Theory holds that the world consists of five basic conditions: gold, wood, water, fire and earth. The development and changes of various things and phenomena in nature are the result of the continuous movement and interaction of these five different conditions. Tao Yuanming chose to live in seclusion, planting five willows in front of his door, probably borrowing the theory of five elements, which shows that although he retired, he was broad-minded, and although the place was small, everything in the universe did not come out, showing a feeling of seeing the big from the small and hiding everything in his chest.

In addition, the ancients often compared people's lofty character with willows to give spiritual sustenance. The branches and leaves are green and plain; If the environment is not good, it will take root and sprout; Covered with treasures, it has made great contributions to mankind; Modesty and prudence, not boasting. So Tao Yuanming planted five willows instead of other trees.