The dragon (용, yong) sits at the very top of this entire tradition — the single most prestigious animal a Korean dream can produce, already mentioned as the strongest possible taemong (conception dream) elsewhere on this site, but carrying enormous weight outside pregnancy dreams too.
A dragon rising or ascending into the sky is read as the height of achievable fortune — success on a scale that goes beyond ordinary wealth or status into something closer to destiny. This reading connects directly to Korea's imugi legend (covered in its own article on this site): an imugi is a serpent striving for centuries to become a dragon, so a dream where something ascends and becomes a dragon is read as long, difficult effort finally paying off completely.
A dragon in water versus a dragon in the sky are read slightly differently — a water dragon leans toward deep, accumulated fortune (wealth that's been building), while a sky dragon leans toward public recognition and status. Two dragons fighting is read as a major power struggle, often between significant forces or people rather than a minor dispute.
Multiple dragons appearing together, or a dragon of unusual color (gold especially), intensifies the reading even further — about as rare and significant a dream as this entire tradition produces, generally treated by interpreters as worth remembering in detail rather than glossing over.