Among Gu Long's protagonists, Ding Pang of FULL MOON, CRESCENT SABRE might be one of the most difficult to sympathize with. Despite the high level of martial arts he achieved, the guy was kind of an idiot, and made one bad choice after another.
First, he got totally played by Lau Yerk Chung and Lau's wife. We can kind of forgive him this one because he was young, naive, and inexperienced, although it was still a kind of bonehead move that only a rookie would make. Getting beyond that, however, consider this:
1. He was kindly adopted by Ching Ching and her grandparents, who welcomed him into their lives and treated him as one of their own...the only condition being that he cut his ties with the outside world and remain in hiding with them. He even got Ching Ching's hand in marriage, the famous "Listening To the Spring Rain One Evening at the Little Pavilion" Crescent Sabre, and the inner power of Ching Ching's grandfather so he could wield the Crescent Sabre at its full potential. He agreed to this...saying that he was sick of the hypocrisy of the outside world and didn't mind living in seclusion.
2. So what does he do a few years later? He gets bored, starts thinking about revenge, and then finally goes back on his word, leaves the sanctuary, and re-enters wulin. Even after having gotten his revenge on Lau Yerk Chung, that wasn't enough: he had to go challenge "3rd Young Master" Tse Hiu Fung and cause a ruckus in wulin.
3. Partly because of his indiscretions, he wasn't there when Ching Ching's sect came under attack by their enemies. Their most powerful weapon, the Crescent Sabre, wasn't available to them for their own defense...causing the sect to finally fall.
In light of all this, it's hard to sympathize with Ding Pang as a protagonist. Has any other wuxia protagonist so completely brought ruin upon his family, friends, and allies?