Wu Nian is cultured, gentle, easy-going, seemingly a good father who never gets angry, a good man. Anyone who interacts with him finds him to be a good person. But besides being a good person, you realize you actually know nothing about him. Even Lin, his frequent visitor, doesn't know what food or color Wu Nian likes.
He appears simple, but behind that facade lies greater complexity, although many people cannot see through this complex side of him.
Xizeer has been studying Wu Nian lately.
A smart person remains smart even if truly amnesiac, whereas a foolish person won't become smarter even with a head injury.
Facing this mystery of identity, Xizeer can only deduce that Shen Nie is more likely. However, Kang Chen tells him that Wu's intelligence is also quite good, just slightly less than Shen Nie's, but in the broader world, Wu's intelligence is still very, very high.
So, it's difficult to distinguish purely by who is smarter.
