What kind of bet did Yuan Tiangang make with an old farmer to lose?

Yuan Tiangang is a famous divine operator in history. It is said that he is proficient in astronomical calendar and Taoism, and is good at divination and geomantic omen. At the end of Sui Dynasty and the beginning of Tang Dynasty, he was very famous and was valued by the rulers of Tang Dynasty. He even took him to the palace to participate in the decision-making of some national affairs. He helped Tang Gaozong find a suitable mausoleum, namely "Ganling", so this person still has certain talents, and the incident mentioned in the title is a case of Yuan Tiangang's early failure.

Yuan Tiangang was famous among the people. He was a small local official in the Sui Dynasty, and his divination was always accurate, so many people came here. One day, Yuan Tiangang met an old farmer and they chatted happily. The old farmer is also very sincere and insists on inviting him to his home. Yuan Tiangang really refused to go to the old farmhouse. When eating, the old farmer suddenly asked his wife to take all the clothes home, saying that it would rain soon, but it was sunny outside. Yuan Tiangang calculated that it would not rain, so he made a bet with the old farmer, but it didn't take long for the wind to blow, so Yuan Tiangang had the legend of this miss.

Yuan Tiangang was shocked at first and sincerely admired the old farmer. Later, the old farmer explained that he left a wound while doing farm work. When it rains, he feels dull pain, so he speculates that there will be heavy rain. Yuan Tiangang deeply felt that he was not good at studying, so he went home to study hard and eventually became a master.

In fact, to put it bluntly, Yuan Tiangang is just not familiar with farming and some common sense of life. The so-called "unity of knowledge and action" still has some truth, but the truth of this matter is actually open to question. As long as you look at this story with an interesting historical attitude, don't take it seriously. After all, divination is actually a feudal superstition, and down-to-earth is the most important thing.