For over two thousand years, the sage Confucius established himself through learning and became a "teacher for all ages". The Confucian doctrine founded by Confucius and the Confucian ideology developed on this basis have had a profound impact on Chinese civilization. The ancient city of Qufu takes the "Old Three Confucius" of Confucius Mansion, Confucius Temple, and Confucius Forest as its starting point, and extends to the Confucius Research Institute, Confucius Museum, and the "New Three Confucius" of the Nishan Holy Land. It deeply cultivates cultural fertile soil, adheres to the principle of "making the past serve the present, removing the coarse and refined, removing the false and preserving the true, and guiding according to the situation", and stimulates the vitality of Chinese culture in practice, inspiring the philosophy of the new era. Entering the "Three Holes": Understanding the Millennium Accumulation of Cultural Temples with towering ancient trees, towering temples, and deep houses. During the summer solstice in Qufu, Shandong, the scorching sun did not stop people from paying respects to their ancestors. The Confucian Mansion, Confucian Temple, and Confucian Forest are magnificent and shining, with a Confucian style that has been passed down for thousands of years. The ancient architectural complex of Confucius Temple, located on the central axis of the north-south city of Qufu, has a grand scale and strict layout. On the platform of the Dacheng Hall, the silk and bamboo are pleasant to the ear, and the elegant music is melodious, fully showcasing the beauty of Chinese etiquette and music. To the east of the Confucius Temple is the Confucius Mansion, which is mainly composed of blue brick and gray tile buildings, known as the "First Family in the World". To the north of Qufu City, there is the Confucius Forest, the resting place of Confucius. There are numerous steles and towering paths of green pines and cypresses. The Shinto stretches for thousands of kilometers, leading to the depths of the "Holy Forest", as if extending into a distant history. In 1994, the "Three Confucius" were included in the World Cultural Heritage List by the United Nations. "If you want to better understand China, you should start with Confucius; if you want to better understand Confucius, you should go into the 'three holes'." Yang Chaoming, former director of the Confucius Institute and distinguished professor of the Institute of Higher Studies of Confucianism of Shandong University, said that the Confucian culture founded by Confucius is an important part of Chinese traditional culture, and the concepts of "benevolence, righteousness, courtesy, wisdom, and faith" advocated by Confucius are still valuable spiritual wealth of the Chinese nation today.