Compared with Li Jiancheng, Li Shimin, the King of Qin before he ascended to the throne, seemed to be a lonely man. Li Jiancheng not only had the advantage of being the eldest brother,but also was crowned prince by Li Yuan, which showed that his father was actually on his side. In addition, Li Yuanji also had a heart for the eldest brother and stood in his camp with a dead heart, but with the help of his brothers and the support of his father and emperor, why could the prince still not fight the King of Qin?

First of all, the ability is too poor. They all wanted to subdue Wei Chigong, but the methods used by the brothers were diametrically opposed. Originally, Wei Chigong was a major general under Liu Wuzhou, and although it was a hostile relationship at that time, it did not affect Li Shimin's admiration for him in the slightest. It was also after the lord was in a different place that Wei Chigong was touched by Li Shimin's affection, which showed that he was a loyal and courageous man.
But how did Li Jiancheng dig the foot of the wall? He didn't consider Wei Chigong's preferences at all, and directly came up with a large cart of gold and silver treasure. For those who are greedy for money, it may work, for Wei Chigong, it is completely equivalent to an insult, he can be strange to Li Jiancheng! The same thing also happened to The Tiance Mansion Fang Xuanling, Du Ruyi and other strategists, Li Jiancheng did not use the right method at all, originally wanted to divide Li Shimin's forces, but instead helped them break into their own side, which is equivalent to helping Li Shimin install an internal line, and his ability is not at the same level at all.
Second, it is reckless. As a prince, he has been generally recognized by the officialdom, and the amount of resources he has is incomparable to that of Li Shimin, who is an adult fighting abroad. It is reasonable to say that he should be silent and adopt the method of slow differentiation, but Li Jiancheng is impatient, and his action is completely to fight grass and snakes, the most obvious of which is to hand over Li Shimin's subordinates to Li Yuanji.
For Li Shimin, this is undoubtedly a dangerous signal. If he could tolerate the big brother's tight steps before, this move was completely to put Li Shimin to death. Although Li Jiancheng also found an excuse to attack the breakthrough and looked grand, what Li Shimin and his generals were thinking about at this time was not how to win the battle, but the real problem of personal life. It was also Li Jiancheng's reckless behavior that forced Li Shimin to make a final decision.
The third is to keep breaking. Since the brothers had already torn their faces and turned against each other, it was unnecessary for Li Jiancheng to meet With Li Shimin at this time. However, at this time, the prince exposed the benevolence of the woman. It was his constant judgment that gave Li Shimin a chance to breathe. Although Li Jiancheng's men also had advisers like Wei Zheng, Li Jiancheng just didn't take his advice, so what could he do?
Li Shimin, who returned to His senses, shot quite quickly, and his initiative showed weakness and successfully paralyzed Li Jiancheng. It was in the case of the other party's carelessness that Li Shimin's Xuanwumen change was successful. In fact, most of the court officials at that time adopted a wait-and-see attitude towards the internal struggles of the imperial family, which were the keys to Li Shimin's success.
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