Ancient people in China addressed each other as "the first step". Does this have anything to do with feet?

The first step is often used as a polite address for peers or friends. During the Spring and Autumn Period, Jin Xiangong of Jin loved Li Ji, which led to the suicide of Prince Shen Sheng. His other two sons, Zhong Er and Yiwu, fled to other countries.

Zhong Er lived in nomadic tribes in the north for twelve years, and then returned to the Central Plains to seek assistance from other countries and revitalize the country. He climbed mountains and traveled long distances, and a group of people arrived in Weiguo hungry and cold. Unexpectedly, Wei Wengong shut them out in embarrassment. ?

At this time, due to long-term malnutrition, Zhong Er caught a cold and had a high fever. He mumbled that he wanted a bowl of broth. However, the accompanying people are also clean. Where can I raise money to buy meat? Urged by the loyal minister, he gritted his teeth, cut off the meat on his thigh and cooked hot soup. After drinking it, Zhong Er recovered without taking medicine.

A group of people also moved on, arrived in the state of Qi, and won the support of others. Finally, after being exiled for 19 years, they returned to the State of Jin and became the famous Jin Wengong in history. After Jin Wengong came to power, he should first talk to exiled courtiers about his contributions, and then talk about his achievements and rewards.

Jie Zhitui was disgusted by people's boasting and striving for profits. He didn't say a word from beginning to end, and Jin Wengong didn't think of him. Jie Zhitui was disappointed and lived in seclusion with his mother. Some people are eager to get him. Jin Wengong remembers his kindness and sends someone to look for him. However, Jie Zhitui was indifferent to fame and fortune, and refused to go down the mountain to be rewarded anyway. Someone suggested to Jin Wengong that Yamakaji should force him to go down the mountain. Unexpectedly, after the fire was put out, they found that Xie tui and his mother were burned alive in the ashes of the mountain with a tree.

Regret Jin Wengong not only ordered the mother and son to be buried, but also cut down a tree to make a pair of clogs. Whenever he puts on these shoes, he thinks of the suffering and * * *, and can't help but sigh: "The first step is sad! Therefore, although the word "the first step" has something to do with feet, it doesn't mean to step on a friend's feet, but to look at things for the sake of others and feel the affection in the past, thus producing the meaning of honoring friends.