What is the spirit of grass in ancient poetry?

The spirit of the ancient poem Grass is strong and tenacious.

The boundless grassland comes and goes with each season. Wildfire can't burn it out, but the spring breeze can revive it. Weeds and wild flowers are all over the ancient road, and the end of the grass in the sun is your journey. I once again sent my bosom friend, and the thick grass represented my deep affection.

The ancient plains are covered with lush grass, which withers and flourishes every year. Yuan's fire will not go out, but when the spring breeze blows, it will spread everywhere. Spring grass in the distance invaded the ancient road, and the green in the sun was connected with the empty city. I have come to see my friend off again, and the grass is full of feelings of parting.

Grass is a famous work by Bai Juyi, a poet in Tang Dynasty. This poem expresses farewell to friends through the description of weeds in the ancient plain. It can be seen as an ode to weeds, and then an ode to life. The first four sentences focus on the diachronic beauty of Life of Weeds, and the last four sentences focus on the diachronic beauty of Life of Weeds. The whole poem has rigorous composition, natural and fluent language, neat antithesis, harmonious scenery writing and full of artistic conception, which is the swan song of "suitable fu". As a kind of "tenacity", the phrase "wildfire never goes out, spring breeze blows high" is a household name and has been passed down through the ages.