Literature Reference: The black dragon should be in the deep pool, while the crane has not yet returned to its nest. Source from 'Ti Puxian Si' by Zhang Hu.
潭: Deep Pool. When used in names, it often symbolizes a person's profound and immeasurable capabilities.
龙: The visage and form of the dragon. In a name, it symbolizes supreme authority and a distinguished status of noble stature, signifying a character that aids in the advancement of one's career.
Meaning: Tan Long symbolizes profound wisdom and hidden strength, like a dragon lurking in the depths, waiting for the right moment to rise.