The Third Plenary Session of the 20th CPC Central Committee has set the goals and requirements forening the reform of the ecological civilisation system to further deepen reform in an all-round way and promote Chinese-style modernization. General Secretary Xi Jinping pointed out: "The Chinese nation has always respected and loved nature. The Chinese civilization, which has a history of more than 5,000 years, is rich in ecological culture." Drawing on the philosophical thoughts such as "the unity of heaven and man", the concept of governance such as "the ban and the release of the time", and the aesthetic such as "the beauty of heaven and earth" contained in the Chinese civilization can help us to deepen the reform of the ecological civilization system and promote the modernization of harmoniousexistence between man and nature on the new journey.
Philosophical thought of "the unity of heaven and man"
In the Chinese excellent traditional culture heaven, earth and man are unified and harmoniously co-existed, and gradually formed the natural ecological view of "the unity of heaven and man". Mencius put that "everything is prepared for me", that is, the nature of all things is possessed by "me", which further means that the nature of all things is interlinked "me", which is an important basis for the emergence of the idea of "the unity of heaven and man". Zhuangzi put forward that "the heaven and I born together, and all things and I are one", which elucidated the essential oneness of man and nature, and expressed the pursuit of "the unity of heaven and". Neo-Confucianism of Song and Ming Dynasties further interpreted "the unity of heaven and man", and Cheng Hao put forward " unity of heaven and man", which believed that the heavenly principle and human nature are interlinked, and that man can achieve the unity with the heavenly principle through self-cult; Wang Yangming put forward "the mind is the principle", which holds that the mind is interlinked with the heavenly principle, and that man can achieve the unity of heaven man through "the conscience". These ideas show that the Chinese ancestors pursued the ecological wisdom of harmonious development between man and nature, and are the natural views formed and recognized by Chinese nation in the 5,000-plus years of historical development.

The concept of "the unity of heaven and man" is practiced by respecting nature In the course of thousands of years of development, "the unity of heaven and man" began with "revere life and love all things", advocated the core of "good", and required people to have reverence and love for all life in nature, to revere all life in nature, that is, to respect nature itself. Laozi forward that "Tao is great, heaven is great, earth is great, and man is great. In the domain there are four great things, and man takes one of them, and believed that there are also Tao, heaven, and earth in the universe, and man is just one of the "four great things", and should not go beyond other several and act recklessly. At the same time, the ancients of China realized the importance of respecting nature and protecting the environment in the governance of the country. "angshu · Yaodian" put forward "He ordered Xihe to respect the will of heaven, to observe the sun, the moon, the stars, and the weather and to teach the people at the right time", which means that in governing the country, we should respect the laws of nature and engage in productive activities on time. "Records the Grand Historian · The Book of the Duke of Zhou" records "The Yellow River dried up and the Shang Dynasty perished... A state must depend mountains and rivers. When the mountains and rivers collapse and dry up, it is a sign of perishing", which emphasizes from the perspective of water sources the importance of natural resources the environment for the country and the nation.

The concept of ecological governance based on "the timely ban on exploitation"
The concept of ecological governance based "the timely ban on exploitation" and "the regulation of taking and giving" was produced in ancient China, which is a kind of excellent traditional culture that conforms to the laws nature and protects the natural environment. It is recorded in "Eight Views of Guanzi" that "even if the mountains and forests are vast and the vegetation is beautiful, ban on exploitation must be timely", believing that although natural resources are abundant, the use and demand for natural resources must conform to the laws of nature and be exploited according to the. In "Wang Zhi of Xunzi", it is recorded that "spring ploughing, summer hoeing, autumn harvesting, and winter storing, the four do not miss the time, so the five grains are never cut off and the people have surplus food", indicating that if people carry out farming and labor according to the rules of four seasons of spring, summer, autumn, and winter, the grain will be surplus, and the people can live and work in peace and contentment. At the same time, ancients also realized that the natural world has its inherent laws of operation, and people's production and living must conform to the laws of nature. For example, "Thealects of Confucius · Shu Er" puts forward "The Master fishes with a line but not with a net, and shoots with a crossbow but does shoot at roosting birds", "Lü's Spring and Autumn Annals" records "Is it not possible to fish in the exhausted pond? And there will be fish next year; is it not possible to burn the woods to hunt? And there will be no beasts next year", etc., all of which propose that natural resources should "taken in moderation and used in moderation", leaving time and space for the recycling regeneration of the natural world, and guaranteeing the endless supply of natural resources.
 addition to the conscious awareness of protecting the ecological environment, the ancient dynasties also issued many prohibitions and laws to protect the ecological environment in order to maintain a good ecological and abundant natural resources. "Yi Zhou Shu" records, "In the three months of spring, do not take axes into the mountains, so that the vegetation can. In the three months of summer, do not cast nets into the waters, so that the fish and turtles can grow." "Fa Chong Ling" records,Do not destroy houses, do not fill wells, do not cut down trees, and do not move domestic animals. Those who do not follow the order will be killed without mercy. In addition, "Ce Lin Er" also proposes to use the law to control people's insatiable desires, believing that the resources of heaven and earth are limited, while's desires are infinite, if not regulated by the law, even the most abundant and abundant resources will eventually be exhausted. These thoughts contain the ancestors' awareness of the rational use scientific management of resources.
The aesthetic concept of "the great beauty of heaven and earth"
"The great beauty of heaven and earth" is a beautiful realm that have been longing for and pursuing unremittingly in the long-standing cultural heritage of the Chinese nation. Zhuangzi proposed that "heaven and earth have great beauty but not speak", believing that heaven and earth themselves have "great beauty", which does not need to rely on language to express and modify, which is essentially a strong praise and longing for the beauty of nature. In "Chibi Fu", Su Shi wrote "Only the clear breeze on the river and the bright moon in the mountains... are inexhaustible treasures of the creator", expressing his eternal and selfless praise for the beauty of heaven and earth, and also showing his understanding of the natural environment and value of the ecological environment. 
In addition to the yearning for the beauty of nature, the ancients were also keenly aware of the need to protect it. "vocating frugality and opposing extravagance" is a traditional virtue formed and accumulated in the long-standing cultural heritage of the Chinese nation. "Ritual, rather than extravagant, is better to be simple," as stated in "The Analects of Confucius, Book 8". "One bowl of porridge one meal, should be considered as not easy to come by; half a thread of silk, half a wisp of hair, should always be remembered as the product of great difficulty" as pointed out in "Zhu Xi's Family Instructions", emphasizes the control of one's own material desires, and also reflects the protection of natural resources. is pointed out in "Treatise on the Accumulation of Grain" that "if things are produced with limited time and used without limit, then the supply of material will inevitably be exhausted," that is, if there is no moderation in use, then the resources will inevitably be exhausted, indicating that the ancients realized the important role ofift in ensuring material resources.
The rich ecological culture contained in the Chinese civilization is everlasting and has laid a cultural foundation and provided useful references for building a modern society people and nature live in harmony. Today, when science and technology are developing rapidly and the ability of human beings to transform nature is becoming increasingly powerful, we still need to draw wisdom nourishment from the excellent traditional Chinese ecological culture, combine the Marxist theory of ecological civilization with the excellent traditional Chinese ecological culture, and strive to compose a new chapter in the construction ecological civilization in the new era.(outlook new era)