Women are ultimately women, always too one-sided in small matters. After all, because of a woman's teachings, her son gradually developed excessive ambition. If a person with great ambition became a ruler, it would bring too much suffering to the people. Even if the people were no longer happy under this ruler, the world would still plunge into chaos. By then, it would be difficult for this woman to live a small life, let alone save her own son.
The Fire Emperor, due to his impure bloodline, was unable to improve his abilities no matter how much he cultivated. His ability merely reached a basic state. The reason he now had such ability to torment the world was because he possessed the power to rule over poisonous creatures and fairies, a power stemming from his mother's impure blood.
