150words read article and ask 1 question

Question:

What was the purpose of further developing the character even though he was willed with flaws such as his arrogance and irrationality? Acuity to the historical data would be sufficient in the development of Kuan Yu to the reader. The concept of developing a hero escapes the purpose of the narrative; however, it can be speculated that the concept of heroism according to Lo Kuan-chung relies on both historical and folk details.