1. The predecessors planted trees, and the descendants enjoy the shade

Source: Hu Wenhuan of the Ming Dynasty, "Selected Groups of Sounds, Qingqiang, Guizhixiang": "Who knows The three cardinal principles and the five constant principles are all about seven greens and eight yellows, oars falling from round duck eggs, empty bamboo poles, and no food in the belly. The predecessors planted trees, and the descendants planted trees to enjoy the shade."

The predecessors planted trees for the descendants. Enjoying the shade can be used to describe the favor of predecessors or to describe the importance of ecological environment protection. It takes several generations for the trees planted by the predecessors to grow up and provide shade, so that future generations can enjoy the shade. This shows that trees take a long time to grow.

It also means that the current work may not be effective and valuable until a long time later. At the same time, it also shows the long-term and arduous nature of ecological environment protection. Only by protecting the environment from now on can we leave a place for future generations to survive. Economic development cannot be at the expense of the environment; sustainable development is the last word.

2. Let us protect the natural environment and protect forests, rivers and oceans for the sake of birds and ourselves! I believe that as long as we work together to protect the environment and care for birds, the world will be better. ——Bing Xin's "Jiyuan Spring"

Extended information

Benefits of protecting trees:

1. Trees can regulate the climate and maintain ecological balance. Trees use photosynthesis , inhale carbon dioxide and spit out oxygen, making the air clean and fresh. One acre of forest releases enough oxygen in one day for 65 people to breathe for a lifetime.

2. Trees can prevent wind and sand, conserve water and soil, and absorb various dust