There have been many Ming emperors in Chinese history, and Li Shimin is one of them, who made many contributions to the country during his reign and created a situation of the tang dynasty. During his reign, Li Shimin was also conscientious and conscientious, advocating frugality, paying attention to the development of education, improving the examination system, and attaching importance to the selection of talents during his reign.
During his reign, he also expanded outwards, and in order to strengthen military strength, the prefectural military system was implemented, and the peasants planted land when there was no war, used the free time of farming to train, and when there was a war, they brought armor to the battlefield, which solved the problem of a large amount of costs needed to raise soldiers. However, even the most holy monarchs also make mistakes, and a common feature of successive kings is that no matter how the early days of the saints will become faint in their old age.
Li Shimin was the same, he was very superstitious in his later years, and found Yuan Tiangang to calculate the fortunes of the Tang Dynasty for him. Yuan Tiangang grew up in a poor family, saying that the cold door out of the noble son, Yuan Tiangang also changed his fate through reading this road, and he was quite talented in fortune telling, and his reputation in the folk was not small. When Li Shimin heard about it, he asked him to come to him and ask him to help calculate the fate of Datang, and left him by his side.
One day Li Shimin asked Yuan Tiangang when the Tang Dynasty would perish? Yuan Tiangang did the math at that time, but did not dare to tell Li Shimin the truth, saying that he could not calculate it if his ability was not enough. Later, Li Shimin did not give up and kept asking him, there was no way he could only tell the truth, he said that when the pigs could go up the tree, it was the time when Datang perished. After listening to Yuan Tiangang's results, Li Shimin was very happy, and he thought that the pig would definitely not go up the tree, and the Tang Dynasty would not perish. Yuan Tiangang took advantage of Li Shimin's happiness to put forward the idea of returning to his hometown, and Li Shimin agreed to it when he thought that Datang would not perish anyway.
Perhaps because Yuan Tiangang said the heavenly opportunity, he died the year he returned home, knowing that when the Tang Dynasty fell, people only moved Yuan Tiangang's words, "Zhu" and "pig" sound the same, and the tang Dynasty fell because of Zhu Wen, but Li Shimin only cared about happiness at that time but did not think of these.