Of course, in Li Sheng's life, it is impossible to have only such credit, his greatest credit is actually to protect Dezong, recover Chang'an, quell the rebellion, and stabilize the country.

In the fourth year of Jianzhong (783), the Jingyuan Mutiny occurred unexpectedly, and Zhu Zhu was proclaimed emperor in Chang'an. Tang Dezong fled to Mukden in embarrassment, ordering King Li Shengqin. Ignoring Zhang Xiaozhong's dissuasion, Li Sheng went to the national disaster and led his army to Daizhou (now Dai County, Shanxi) through Feihu Road (i.e., Lingqiu Road), and was appointed as the envoy of the Shence Camp Festival. Later, Liu Dexin was defeated and returned, and he was in the same situation as Li Sheng. The slight difference is that Li Sheng is in Weibei, while Liu Dexin is in Weinan. If there is an order from the emperor to withdraw the army, it is understandable, but the emperor is in danger, and someone is a fugitive general, so how can he do it? Li Sheng finally beheaded Liu Dexin on this charge and annexed his troops.

After Tang Dezong fled to Fengtian, the local supreme leader Shuofang Jiedu asked Li Huaiguang to join forces with Li Sheng. Li Huaiguang is a general, and he has a political junior, and in the founding era, he must have killed the enemy and made meritorious contributions. But in the time of Dejong, it was the most important thing to protect the emperor. At this time, Dezong is not in the capital, and the greatest credit must be to protect him. Therefore, Li Huaiguang asked to join forces with Li Sheng. Although the joint efforts seem to be one less credit, as long as they find an opportunity to squeeze Li Sheng, wouldn't it be good?

However, Li Sheng was appointed by the emperor as the envoy of the Divine Strategy, and his authority was even greater. However, the current official is not as good as the current management, and Shuofang Jiedu made Li Huaiguang the highest local military and political chief, and Li Sheng still had to ask for military rations and other materials from Li Huaiguang.

As a result, in terms of factors such as the distribution of military power, the supply of military rations, and the timing of sending troops, the two fought openly and secretly, Li Huaiguang was afraid of being annexed by Li Sheng, and Li Sheng was also afraid that Li Huaiguang would annex him. Small frictions between the two sides continued. In this regard, Emperor Dezong also saw it really, since he fled, he understood that his life was in the hands of the envoys at any time, and if he was not careful, he would never be able to return to Chang'an. For this reason, he sent Lu Zhen, a scholar from Hanlin, to make lubricating oil for Li Huaiguang and Li Sheng.

Of course, Li Huaiguang's mind can be understood, and Li Sheng undoubtedly thinks more. When he saw Li Huaiguang's refusal to enter the army, he said that the rebels had occupied the capital, and the emperor was in exile, so the emperor should come first. The purpose was to protect Tang Dezong. If the emperor is gone, the country will naturally be in chaos, and no matter how extravagant the struggle for power and profit is, it will become an empty word. The two troops merged and returned to the capital, in order to reassure Li Huaiguang, Li Sheng said that he wanted to be Li Huaiguang's vanguard, which shows that in the face of national interests, Li Sheng still took a step back, and it also made people feel that he was trustworthy.

In comparison, Li Huaiguang's performance is a little puzzling. If it is said that his soldiers and horses came from afar and needed a little rest to fight Emperor Zhu, it would be reasonable. It's just that he has been stationed in Xianyang for more than 80 days, has been waiting for fighters, and has always refused to send troops. The fighter plane does need to be patiently waited, but if there is no suitable opportunity for nearly three months, it is unreasonable, and there is even a theory that he has colluded with Emperor Zhu. Whether the facts are true or not, Li Huaiguang's purpose is not entirely to save, but more likely to be selfish. In such an extremely unfavorable situation, Li Shengzuo asked the emperor to take contingency measures, adjust the three deviations into the history of the three states, and each lead the troops to guard, in case the situation is not right, he can also really protect himself.

At this time, Tubo also said that he would help destroy Emperor Zhu, but it was a pity that Tang Dezong chose not to fully believe in Li Sheng, nor Li Huaiguang and others, but it was a pity that Tang Dezong chose not to fully believe in Li Sheng, nor Li Huaiguang and others. Once again, his ambivalent character is on display. In fact, earlier, when he left the capital, he was about to flee to Chengdu, but Li Sheng, Yan Zhen and others resolutely disagreed. Obviously, the geographical situation of Sichuan is of course good, easy to defend and difficult to attack, but if he really fled to Sichuan, people can see that he has no hope of returning to Beijing, and will he win a battle that the emperor does not recognize?

Between Emperor Zhu and Li Huaiguang, Li Sheng led a lone army to fight. nominally has Li Huaiguang to help, but in fact, Li Huaiguang's ghost fetus can be seen by everyone. There were no soldiers, Li Shengqian begged Li Huaiguang with thick coins, and after all, he didn't make a fuss. There was no food, Li Sheng asked Zhang Yu to levy taxes in the capital, and in the army, he carried out the general mobilization of the whole army: "The country is in trouble, the emperor is in exile, witnessing the danger, and dying for righteousness is our duty." If you don't kill the bandit leaders at this time, and make meritorious contributions to gain wealth and nobility, you will not be heroes and heroes!"

Heroes are always hot-blooded, and lone heroes are more respectable. In the process of many festivals to make onlookers, Li Sheng showed his super willpower, his loyalty and integrity, infected the soldiers of the three armies, and the army he led became the main force to recover Chang'an.

Emperor Zhu was defeated and fled, and the imperial city was recovered.

In the battle to recover Chang'an, the army led by Li Sheng "did not disturb the residents of Chang'an". The ministers of the imperial court asked for credit for Li Sheng, and the table wrote: "Shengdang is fierce, and the city is not easy to be built, the temple is not shaken, and the people of Chang'an do not know how to fight, although three generations of teachers can not be like this." Tang Dezong, who was far away in Liangzhou, couldn't help but burst into tears when he heard the news, and he replied: "Heaven gave birth to Li Sheng for the people of the country, not just for me, the emperor." According to the "New Tang Dynasty Book", Dezong said: "Li Sheng was born to serve the community for ten thousand people, not for me!" Indeed, it is impossible to overestimate the restoration of Chang'an, the continuation of the community, and the benefit of the people of the Tang Dynasty.

Li Sheng went out of the city to welcome the emperor's return, and claimed that he failed to eliminate the traitor in time, causing His Majesty the emperor to go into exile twice. Although Dezong had doubts, he also had his atmosphere, he named Li Sheng as Situ, and also wrote the order, and actually sealed a thousand households.

When the emperor gave up again and again, and when Emperor Zhu took the generals of the Shence Army, including Li Sheng's family members, as hostages, Li Sheng showed a noble personality and could not ignore the world because of one family and one surname! At this time, Li Sheng deserved to be the strongest and most loyal mainstay of the Tang Dynasty.

The country has finally returned to the hands of Dezong, and the ancestors should be glad that they have knowledge. For this reason, Li Sheng received the highest praise that a courtier could get: a field house, pomp, a monument to the establishment of a monument, and an inscription written by Dezong himself...... Whatever can be given is given.

However, as mentioned above, Tang Dezong had a contradictory personality, especially after a series of events, including the Jingyuan Mutiny, he became extremely sensitive.

After the recovery of Chang'an, Li Sheng returned to the front line and served as his Fengxiang, Longyou, Jingyuan Jiedu envoy, and deputy marshal of the camp, and stationed in Jingzhou. Li Sheng has been dealing with the Tibetan people since he was a teenager. He understands that these people have always listened to whoever has the biggest fist, and there is no faith at all. As for Tibet, it is necessary to strictly guard against it. Prime Minister Han Yun supported Li Sheng's opinion and requested that military rations be sent to Li Sheng to attack Tibet.

It's just that Dezong has been frightened by the war, and he always suspects that the generals will cause trouble in order to obtain military merits. Coincidentally, Han Yun died, and the successor Zhang Yansheng slandered Li Sheng many times. What Dezong was worried about was about to happen, how could Li Shengjiu be allowed to hold the military power? Ren was his hard work, Ren was the one who saved the people, but he couldn't be the only one, and the court had to be the one who had the final say. Therefore, Dezong adopted Zhang Yanxian's advice and let Liu Xuanzuo and Li hold Allah to hold the northwest border affairs.

Li Sheng no longer has military power, although he cried like a woman with red eyes, sent his son to Chang'an as a hostage, and even cut his hair to become a monk, but Dezong is no longer the emperor who hid in Tibet, his wings are stiff, and Li Sheng is no longer needed.

Is it really not? Not really. It's just that most of them, whether they are famous generals or politicians, are cold-blooded. You can be farsighted, but not close. Li Sheng came to the end of his life in depression, Tang Dezong knew that he couldn't stop crying, posthumously named him the Taishi, called Zhongwu, and personally sent the funeral, and issued an edict to enjoy the temple court of Dezong, and the graphics Lingyan Pavilion. It can be regarded as a reward for his loyalty. It's just that this award is a pity for Li Sheng.

When the emperor has no merit to be rewarded, when Li Sheng's prestige is extremely high, it means that the contradictions in the relationship between the monarch and the minister begin to emerge, and the rift is inevitable. Once he was framed by the villain of the court, the emperor did not harm him, but just exempted him from military power and made him an idler. Since ancient times, "it is difficult for those who are high" to be complete, this is the truth.