Daytime Immortal was adept at playing with fire, and was only barely acquainted with "Water." He had added this "River of Refining" to his Seven Treasures of Immortal Sovereigns to achieve "the balance of fire and water," to balance his own yin and yang.
Fairy Bella's excuse for seizing this treasure was actually untenable.
However, unlike Daytime Immortal, Master Sun had a true water attribute in one of his seven Mini-worlds when he was in the Lower Realm. Master Sun was a true all-rounder, only relying on "forging techniques" to rise to prominence in the Heaven Realm.
The River of Refining had transformed into water amber stone, further improving its quality. Master Sun wanted to forge it into a powerful Fighting Techniques treasure. Although its quality was sufficient, many fine-tuning details were needed. Even a slight adjustment at the level of "Seven Treasures of Immortal Sovereigns" requires Immortal Materials of at least second grade.
