Was Zhang Sanfeng the best martial artist in Jin Yong's novel?

Zhang Sanfeng was a fictional character in Jin Yong's novels. His martial arts were so powerful that he was known as the "number one person in the martial arts world". However, because Jin Yong's novels were a fictional literary form, it was impossible to give a conclusive answer as to whether Zhang Sanfeng was the best in the world. I can only tell you that Zhang Sanfeng is a very powerful character in the novel.