The famous saying "The sky covers selflessly, the earth selflessly carries, and the sun and moon shine selflessly" vividly depicts the selfless dedication of nature. It originates from the "Book of Rites: Confucius's Leisurely Residence" compiled by the Western Han Dynasty ritual scholar Dai Sheng, which emphasizes the heaven's tolerance and coverage of all things, the earth's bearing and acceptance of all things, and the sun and moon's permanent illumination of all things. These natural phenomena symbolize the justice and benevolence of the universe, without any partiality, only to nourish and illuminate all life.

Through the concept of "Three Selflessness", Confucius taught people to imitate the selfless spirit of nature and treat all living beings with justice, fairness and care. Whether they are rulers or ordinary people, they should take responsibility for themselves. responsibility and contribute to social harmony and progress. As a Confucian classic, "Book of Rites" is not only a record of pre-Qin rituals, but also an important carrier of Confucian thought. It has a profound impact on later generations and has guiding significance for the moral construction of today's society and the construction of a harmonious society.

In general, this sentence reminds us that no matter in individual or collective life, we should treat others with a selfless spirit and jointly build a social environment full of love and justice .