What does Mr. Wang mean when he says it's a doll with three mountains?

Have good insight and be able to grasp the current situation.

; Smart, witty, like mysterious things; Diligent and studious, pay attention to practice and practice in everything.

Advantages are keen thinking and foresight; Rich in knowledge and willing to teach others. Disadvantages are seriousness, stubbornness, lack of flexibility and difficulty in getting along with others.