Why did Guan Yu fail in Maicheng?

Guan Yu in the Three Kingdoms is not only brave, but also resourceful. However, although he was famous all his life, he eventually lost Jingzhou and defeated Maicheng. \x0d\\x0d\ Why? It's not that he is complacent, it's all because he hasn't kept pace with the times! \ x0d \ x0d \ Let me talk about Guan Yu riding a red hare. Red Rabbit first appeared in the third paragraph of the romance novel "On Wen Ming Dong Zhuo scolds Ding Yuan", and the exact time was about 189. In 2 19, Guan Gong left Maicheng, and the red rabbits were deprived of food for several days at the same time, which was exactly 30 years. In addition, the red hare can be used as a war horse, which should be 5-6 years old, so the red hare has lived for at least 35 years. The life span of a horse is generally 20 to 30 years, and modern horse racing basically takes only five years to retire. Therefore, after the horse reaches the age of 10, it is basically unable to run. In Romance of the Three Kingdoms, the red rabbit ran on the battlefield for 30 years, which means that Guan Yu in the later period did not have the prestige to fight the red rabbit against Yan Liang and Wen Chou in Bai Mapo. About 200 years ago. Red hare is in his teens, which is its peak age. \ x0d \ x0d \ This shows that when Guan Yu defeated Maicheng, Red Rabbit was 35 years old and completely old. \ x0d \ x0d \ However, Guan Gong attached great importance to friendship and could not bear to replace the old Red Rabbit. When Guan Yu left Maicheng, he couldn't even handle the horse rope. Think about it. In Changbanpo, Zhao Yun jumped out of the horse pit, but in Maicheng, it was just a small horse rope, which should not be a problem for the red rabbit, but it was old and hungry for several days, as if a centenarian had been hungry for several days, forcing it to climb the mountain. \ x0d \ x0d \ Let's talk about Guan Yu again. Guan Yu's Tombstone of Guan Houzu was unearthed in the Kangxi period of Qing Dynasty, saying that Guan Yu was born on June 24th in the third year of Emperor Huan of Han Dynasty (160). Guan Yu's chronicle thinks that Liu Bei is one year old, so Guan Yu died in 2 19 at the age of 60. Du Fu's "Qujiang" poem: "Wine and debt together, life is seventy years old." That is to say, Guan Yu was already an old man when he failed in Maicheng. \x0d\\x0d\ Imagine: an old man in his late sixties is riding an old horse and carrying an 82-pound dragon knife in his twilight years, facing the pursuers with invincible force? \x0d\\x0d\ strange horse? I don't think so. The fundamental reason is that Guan Yu did not keep pace with the times, or refused to keep pace with the times. What a pity!