Originally Posted by
PJ
Jin Yong's martial artists are still human, not immortal. They are still subject to the physical limitations of old age, even if they have tons of internal energy.
Actually, you don't have to look too hard to find exactly this. For example, when Shaolin was ganging up on Zhang Sanfeng at his 100th birthday, this is what people thought:
众人心想:“你话倒说得好听,却原来是要以三敌一。张三丰武功虽高,但百龄老人,精力已衰,未必挡得住少林 三大神僧的联手合力。”
Everyone thought: "it sounds good, but you're basically ganging up on Zhang Sanfeng 3:1. Although Zhang Sanfeng's martial arts level is high, but at 100 years old, his physically strength has weakened, he may or may not be a match for the combined forces of the 3 divine monks of Shaolin."