This was the difference!
"This is not fair! This is not fair!" Ming GE was heartbroken. Leng ruoxue didn't know how to comfort him when she saw his heartbroken look. In fact, if the affinity was not enough, she could still force it to recognize her as its master. However, she was not willing to treat cute beasties that way, so she could only keep these words to herself.
However, the nether Dragons did not care about fairness. After all, there were no beast tamers in the nine nether nether prison. Thus, they were not afraid that someone would go against their will and force them to acknowledge a master! Hmph! If he couldn't beat his opponent, he could just self-destruct!
It could be said that the beasts of the netherworld prison were not only stubborn, but also had a violent temper. Self-destruction was even easier than eating and sleeping for them, so they didn't think it was a difficult thing!