Original: In Japanese mythology , RyÅ '' gÅ '' - jÅ ( ç '' å å \/O/ é 3\/4 å å ) is the undersea palace of RyÅ '' jin , the dragon god of the sea .
Simplified: In Japanese mythology , RyÅ '' gÅ '' - jÅ ( ç '' å å ) is the palace of RyÅ '' jin , the dragon god of the sea .