In the novel " The Heaven Sword and Dragon Sabre ", Zhang Wuji chose Zhao Min over others because Princess Zhao Min had a unique personality and charm. She was smart, kind, upright, and very persistent and determined. In the novel, Zhang Wuji had experienced many difficulties and pains, and Zhao Min had always been by his side to support and encourage him to help him overcome the difficulties. Her feelings for Zhang Wuji also deeply touched him, making him feel that she was the only one who truly understood him, cared about him, and loved him. In addition, Zhao Min's personality and charm won her the support and affection of many other martial artists. Therefore, Zhang Wuji chose Zhao Min over others because he loved her deeply and she was the only person who could spend the rest of his life with him.