Gao Peng was someone who respected the rules, and he definitely wasn't one to break them recklessly. The aforementioned rules didn't refer to those that governed the outside world, but rather the values he abided to that were deeply engraved in his soul.
An eye for an eye, and a tooth for a tooth.
The Red-Eyed Crocodile King of Greenwood Swamp was burned alive by Flamy in settlement of the personal vendetta between them. Gao Peng would give his all to support Flamy in seeking revenge, going as far as to decide that even if Flamy lost, at the cost of tarnishing his pride and honor, he would still have allowed Dumby and Goldie to attack the Crocodile King immediately.
Fortunately, Flamy had been victorious in the end. It was truly a familiar worthy of being brought up by Gao Peng himself.
On the grasslands, after fulfilling its life-consuming quest for revenge, Flamy stood there in a daze, its eyes staring at something far away, gaze dark with melancholy.