Duge had a kind heart.
Although the South Peak Emperor had no good intentions, Duge still allowed the South Peak Emperor to comprehend the Daoist Rhyme for two hours, until he was forced to a pale-faced state and had no choice but to retract the Daoist Rhyme back into his body. Depressed, he told the emperor, "I did my best," which completely maxed out the emperor's favorability towards him.
Afterwards, Duge's wish was granted as he acquired the "Mystery of the Profound Heavens" from the South Peak Emperor, along with many practical smaller spells, which even included Transformation Techniques.
However, the South Peak Emperor's Transformation Techniques could only change one's human form and not into other species, making it relatively low-end among similar skills.
