In HSDS, our protagonist Zhang Wuji suffered from Xuanming Palm and from the age of 10 onwards, the cold toxic energy of palm stroke flows inside his body. If he doesn't find a cure, he will certainly die. Obviously, learning the Art of Nine Yang was able to neutralize the cold energy and save Wuji. Golden Flower Granny also mentioned that she "might" have been able to help him. Other methods in the novel, including the healing skills of Hu Qingniu, could only postpone death for a short period of time, but could not save his life.
Using methods found throughout the Jin Yong Universe, what other ways are there to save Zhang Wuji? Who(martial arts master, healer etc) is able to do what Zhang Sanfeng could not?
I have thought of some crazy ideas myself, and I hope to share them here later on...