First, the hidden danger Nangong Yao had left inside Yu Nanfeng had already fused with her entire being. It did not exist like an external wound; it was like a birthmark someone was born with, extremely difficult to separate through external force.
Second, although Yu Nanfeng's cultivation had reached the Grandmaster realm and her spirit essence had taken form, she had ultimately not cultivated a Primordial Spirit. She could not, like Zhao Rulíng, gather her Primordial Spirit and manifest it in a form visible to the naked eye.
Naturally, even with Meng Zhao's heaven-piercing methods, he could not use fine Primordial Spirit manipulation to sever that hidden danger.
Yu Nanfeng was a very intelligent person. Seeing that Meng Zhao's expression was less than pleasant, she had a bad premonition, but she held herself back.
Only after Meng Zhao withdrew the light of his Primordial Spirit, his gaze deep and clearly lost in thought, did she ask,
"What is it, Dragon King Meng? Is the problem with me very troublesome?"
Meng Zhao did not conceal anything. After all, he was no swindler and would not deceive Yu Nanfeng, so he told her everything he had learned.
In the end, he concluded,
"That diamond-shaped mark between your brows is likely inseparable from the martial arts Nangong Yao taught you. It conceals a Primordial Spirit Seed of his, which slipped into your body and, through your martial cultivation, has continuously refined and strengthened itself, merging with your body and Primordial Spirit.
"In the future, so long as Nangong Yao wills it, even if he is ten thousand miles away, you will be manipulated by his qi and unable to control yourself—unless you cultivate a Primordial Spirit, and your Primordial Spirit Power is sufficient to resist Nangong Yao."
To Yu Nanfeng, those words were