What allusions about horses tell us about the origin of this allusion?

Bole Xiangma

Bole’s original name was Sun Yang. He was a man of Duke Mugong of Qin in the Spring and Autumn Period. He was very good at distinguishing the quality of horses and was a famous horse physicist. Therefore, People called him Bole (the name of the stars in the sky, rumored to be in charge of Tianma). One time, Bole passed by Yuban, his eyes lit up, and he saw a thousand-mile horse; but this horse was regarded as a bad horse and used to pull carts. Bole felt very sad and couldn't help but burst into tears. The horse seemed to know that Bole sympathized with it, and it foamed at the mouth and neighed repeatedly. Bole has a friend named Fang Jiugao, who is also good at horse-drawing. Once, he found a horse and told Duke Mu of Qin that it was a yellow female horse. Duke Mu of Qin brought it in and saw that it was a chestnut-colored stallion. He was greatly disappointed. Afterwards, Mu Gong said to Bole: "Fang Jiugao can't even tell the difference between a male horse, a female horse, and the color of the coat. How can he tell the quality of the horse?" Bole disagreed. He thought that Fang Jiugao valued the inner spirit of the horse rather than the inner spirit of the horse. shape. After hearing this, Duke Mu took out the horse and inspected it carefully. It turned out that it was the best horse in the world. People often compare people with the ability to appreciate talents to Bole, and useful talents to horses with a thousand li. This is "Bole's horse".

An old horse knows the way. During the Spring and Autumn Period and the Warring States Period, Duke Huan of Qi and Prime Minister Guan Zhong of the State of Qi were on a crusade against the Guzhu State, but were deceived into the desert by the enemy. Looking at the night sky, I saw a vast expanse of white flat sand, a thousand layers of dark mist, a cold and desolate crowd of crying ghosts, and a few gusts of miserable wind. Guan Zhong said: "I have heard for a long time that there is a dry sea in the north. It is a very powerful place. This is where we cannot move forward." Jijiao sent an order to close the army and brought fire. It will be extinguished when the wind blows, and it will not burn if it is blown. The accompanying sergeants each beat gold and drums, firstly to keep away the negative energy, and secondly to make the troops hear the sound and gather together. Seeing that the valley was dangerous, Guan Zhong was anxious to find a way out, but he was rushing east and west, twisting and turning, and had no way out. Guan Zhong said: "I know that old horses know the way. Most old horses come from Mobei. You can choose a few old horses and watch where they go and follow them." According to his words, Duke Huan took a few old horses and let them go ahead. After struggling, he came out of the valley.