I've never really understood why this guy was included in the story. I mean, I guess there was the shock value after Guo Xiang was born, and them yelling "there's another one!", and he was the first owner of the Dragon Saber, but what else was there to this character?
During their birthday celebration, all the attention is focused on Guo Xiang, and he's harldly mentioned. Hell, even the chapter of their birth is named "Baby Girl of a Falling City."
So, is there an underlying reason for why the character of Guo Po Lu was created?