Li Shimin's mother had a dream. Why did Tang Gaozu let Dou Jiande leave so soon?

Because Li Shimin's mother, Dou Shi, dreamed of a golden arhat and said to her in the dream, "Your son has taken one of my disciples, please tell him to give it back to me." . The ancients believed in dreams, so Li Shimin's mother, Dou Shi, went to Li Shimin to find out about the situation and found that it was actually related to Dou Jiande, so she told Tang Gaozu about the dream. Tang Gaozu was frightened after hearing this. He thought that this man could not be killed, so he followed the development in his dream and made him a monk. At first, Li Shimin's mother came to Li Shimin for questioning. Li Shimin said that he was in danger in the Wulin, fell into a cave and met a holy monk named Tang Sanzang. The holy monk told him some songs, but Li Shimin didn't agree with him at that time. It's really surprising that such a thing has happened now. So Li Shimin's mother, Dou Shi, studied the song that Tang Sanzang said at that time with Li Shimin, and finally got the general meaning:

They didn't understand the effect after the translation. At this time, Yu Wenzhaoyi stood up and said that his mother's surname was Dou, and Tang Yuan wanted to kill this person. From the combination of Dou Jiande's dream and this sentence left by the holy monk, it means that Dou Jiande, his mother, personally pardoned Dou Jiande, so that Jianye can be stable and the future country can be strong.

Originally, Tang Gaozu was a little shaken after hearing these words. In addition, Dou Jiande's daughter Dou Xianniang and sworn sister Hua Mulan wanted to take their lives instead of Dou Jiande's punishment. Tang Gaozu was deeply moved by the friendship between their father and daughter. Coupled with the words of the holy monk, Jianye spared Dou Jiande and made him a monk. Of course, these statements are also one-sided. As the founding emperor of the Tang Dynasty, Li Yuan's scheming and ingenuity are incomparable to many people. It is impossible to give up taking a person's life because of these things. The real reason needs to be further explored.