Where Did the Mysterious Ex-Wife Go?

He is one of the heirs of the Emgrand Group. He is rumored to be cold and capable, but handsome and passionate; she is his ex-wife, gentle and timid. It was only after the divorce that he realized that she was not what she seemed at all. She was gentle on the surface but cold and ruthless, turning a blind eye to his feelings. At the moment when he was forced to divorce, he never found out the details of this woman; when they meet again three years later, how will he treat this duplicitous woman?