Based on Ye Wanwan's observations, Nie Linglong absolutely wasn't as simple as she appeared. If she wanted to topple the Nie family using a mere impostor, that was an utter fantasy story.
Unless…
A) Nie Linglong was overly powerful herself.
B) Nie Linglong had a supporter behind her.
C) This was the undesirable outcome to Ye Wanwan: Nie Linglong was overly powerful herself AND she had a supporter behind her.
"What are you worried about, President?"
Third Elder expressed his incomprehension toward Ye Wanwan.
Ye Wanwan stayed silent. Perhaps she was overthinking, but she had a nagging feeling that this investigation and tracking of Nie Linglong wasn't a simple mission and might even prove treacherous.
Her earlier words were uttered in hopes that Third Elder would treat this mission very cautiously and wouldn't lower his guard in the slightest.
