Historians' public comment: The decline of the Tang Dynasty began with the Anshi Rebellion.

And the key to this is the battle of Tongguan.

An Lushan led an army of 150,000 soldiers to Fanyang on the ninth day of November in the 14th year of Tianbao.

On the 15th of the same month, Tang Xuanzong had confirmed the news of An Lushan's rebellion and began to organize the recruitment of troops to quell the rebellion.

Some historians believe that this exposes the defects of the government military system of the Tang Dynasty in the late Xuanzong period, where the local military was strong and the central government was weak, and the temporary recruitment of troops could not resist a strong enemy.

In fact, at that time, the Yulin army directly under the central government of the Tang Dynasty had 80,000 people, which was not a huge gap compared with the 150,000 troops under An Lushan.

Then, he mobilized Feng Changqing, the envoy of Anxi Jiedu, and Gao Xianzhi, the general of the right Yulin, to lead the army to guard Tongguan, and the army led by the two was always more than 150,000.

The Geshu Iron Cavalry led by Geshuhan was even more than 200,000.

Therefore, at that time, Xuanzong's command could deploy troops to quell the rebellion far above An Lushan.

Returning to the topic at the beginning, the root of the complete rout was the Battle of Tongguan.

Tongguan, in danger, easy to defend and difficult to attack.

However, the first wave of troops stationed in Tongguan, Gao Xianzhi and Feng Changqing, the commanders who implemented the strategy of sticking to the strategy, were falsely accused by Bian Lingcheng, the supervisor sent by Xuanzong, and were beheaded in front of the battle for the crime of "losing their teachers out of discipline".

The second wave of troops stationed in Tongguan, the commander Ge Shuhan also took a firm strategy, and was admonished by Yang Guozhong, Xuanzong ordered to force Ge Shuhan to take the initiative to attack, so the ambush was defeated.

On the way west with Xuanzong, Yang Guozhong was beheaded by the indignant * soldiers in Ma Weiyi, and even his favored sister Yang Yuhua was hanged to death.

Bian Lingcheng, the eunuch of the prison army who was ordered to kill Gao Xianzhi and Feng Changqing, was captured by the rebels, and later, he was obtained by the rebels* and handed over to Su Zong, who was given death for the crime of overkill.

It seems that all the responsibilities are on Yang Guozhong and Bian Lingcheng.

It seems that all the problems are because Tang Xuanzong is old and faint and mistakenly believes slander.

However, there are many doubts in this.

If Bian Lingcheng killed Gao Xianzhi and Feng Changqing in vain, why did he do this?

At that time, An Lushan's 150,000 troops were under the city, eyeing the city. Killing the commander in battle and attacking the city with a large army, didn't he also lose his own life? It was later proved that he was indeed captured with the fall of Tongguan.

In that year, Gao Xianzhi was an official who worshiped the deputy envoy of Anxi Duhu, and after breaking the Tubo army, he directly reported the good news to the imperial court, which offended the Anxi Duhu envoy and almost died. It was Bian Lingcheng who reported to Tang Xuanzong and made a powerful statement, which not only saved Gao Xianzhi's life, but also made Gao Xianzhi soar in the future and sit straight on the seat of General Yulin on the right.

1,300 years have passed, and the emperors and generals have all turned into dust.

Perhaps, no matter how technology develops, we will not be able to understand the scheming of the people at that time.

No matter how much historical data is collected, it is difficult for us to conclude which view is the final conclusion.

Sometimes, history has more secrets than the future.

Because, the future can be verified, and for the past, we can only imagine.

It is precisely because of this that history is so wonderful and fascinating, chewed and detailed by generations of good deeds.