The earth is the common home of human beings. The survival of human beings is closely related to the earth. We grow and live on the earth and enjoy the resources brought to us by the earth. At the same time, the planet is facing unprecedented challenges, with increasing ecological degradation. We should always be soberly aware that it is the responsibility and obligation of all mankind to protect the earth. The earth gives us infinite energy, and we should also give it back to nature in a correct way. President Xi Jinping pointed out in his report to the 19th National Congress that it is incumbent upon us to "accelerate the reform of the ecological civilization system, build a beautiful China" and protect the earth.