It was during the mission with Long leg Sister to retrieve the Tenth-order Yuanguishen Sword from the Overseas Immortal Mansion that Ye Rong collected two guardian spirit beasts by the way.
However, those two fellows never showed any sign of submission. As soon as they were released they shouted about regaining their freedom, let alone being commanded to do anything.
Chief Master had no interest in such little brothers, and having more of them would be useless.
After Ye Rong swung his sword at Pan Chi, the lazy dragon became quite restrained and couldn't be arrogant anymore.
Although Minghe Sword Light could break Pan Chi's defense, it was blocked by the thick water curtain and at least 70% of the damage was reduced. Still, the Hundred Spirits Immortal-Slaying Sword, despite having less attack power than Minghe, was more suitable for grinding away Pan Chi's health.