One hundred thousand troops, why was Dou Jiande hanged in Hulao Pass by Li Shimin?

During World War I in Hulao Pass, both Dou Jiande and Li Shimin were in the most exhausted moment. At this time, it is time to test the courage and endurance of the soldiers. Only by holding your breath can you win. At that time, Dou Jiande did not listen to military orders because of his arrogance, and his troops were unevenly distributed. Finally, Li Shimin won in one fell swoop.

First of all, Li Shimin is resourceful. Li Shimin can be himself and himself in the face of the ever-changing situation on the battlefield, and he has the patience to fight side by side with Dou Jiande. Just after Dou Jiande came back to find out the news, he learned that Tang Jun would arrive in Hebei to herd horses, so Dou Jiande believed this information without any doubt and planned to sneak attack Hulao Pass when the Trojan horse in Li Shimin arrived. What he didn't know was that this information was learned by spies in Li Shimin. Li Shimin tactfully didn't startle him, so he arranged his troops to attack Dou Jiande on the second day of Tianan. He captured Huanglong, Hulao Pass and Dou Jiande alive. Li Shimin is brave and good at fighting, and can fight alongside Dou Jiande or lead troops, which can be described as both wisdom and courage. At the same time, Li Shimin can control his temper and fight against metaphysics when the soldiers are most tired.

Second, Dou Jiande's arrogance was just before World War I in Hulao Pass, and the strategic objectives of both sides were clear, but why did Dou Jiande finally defeat Li Shimin with absolute superiority at first? The biggest reason is that Dou Jiande is arrogant and can play a good hand. Obviously, he took the lead but didn't hold his temper. He didn't listen to the military adviser. As long as he doesn't make mistakes, Li Shimin has no chance to make a comeback, but Dou Jiande lost to himself too lightly and didn't listen to suggestions. In the end, his forces were too concentrated and passive, and others took them down.

Winning or losing is a common occurrence in military strategists, but as a general, you should always be careful not to underestimate your enemy or overestimate yourself. When leading troops to fight, the most taboo thing is that the general goes his own way and does not listen to other people's opinions. Dou Jiande can be said to have been defeated by himself.