汉: The name of a river, the Han River, the largest tributary of the Yangtze River. It extends to signify vastness, benevolence, open-mindedness, and magnanimity.
俞: "Permission granted, with a joyful and harmonious demeanor."
Meaning: Han represents the Han ethnicity or the Han Dynasty, symbolizing profound culture; Yu signifies stability and harmony, implying wisdom and composure.