Literature Reference: “Yu” originates from 'The Book of Songs, Daya, King Wen': 'King Wen is above, shining in heaven. Although Zhou is an old state, its destiny is renewed. When destiny is gathered, King Wen is at peace. Majestic King Wen, in diligent reverence. The joyful gentleman, with illustrious virtue. Suitable for the people, receiving blessings from heaven. Heaven protects and commands, extending from heaven. Majestic and unceasing, King Wen is at peace. For ten thousand years, receiving heaven’s blessings. From all directions, they come to celebrate. For ten thousand years, with no lack of assistance.' 'Yuan' originates from 'The Book of Songs, Yong Feng, The Nobleman and His Wife': 'Such a person is the beauty of the land.'