Jili Prefecture is one of the prefectures established after the Tang Dynasty destroyed Goguryeo. After Tang Ping Goguryeo, it was divided into nine prefectures, forty-two prefectures, and one hundred counties, and was governed by the Andong Metropolitan Protectorate. Jili Prefecture is the southernmost state of the Liaodong Peninsula.

Since the 28th monarch of Goguryeo, King Bao, was captured by the Tang Dynasty, the Goguryeo Kingdom fell for 700 years. Its territory was divided into nine prefectures and 100 counties in 42 prefectures by the Tang Dynasty, and the famous general Xue Rengui of the Tang Dynasty was the first protector of Andong, leading 20,000 soldiers and horses to pacify Liaodong. After the destruction of Goguryeo, in order to prevent the resurgence of Goguryeo, the Tang Dynasty forcibly moved a large number of Goguryeo nobles and people to Liaoxi and Hebei, with more than 400,000 people.

During the reign of Gojong, the Tibetan invasion and the Tang Dynasty sent troops to the northwest, but Silla took this opportunity to invade the former Baekje land under the jurisdiction of the Tang Dynasty's Xiongjin Prefecture, and the Tang and Silla War broke out. The Silla people secretly instigated the rebellion of the remnants of Goguryeo, and because Xue Rengui led an army of 100,000 troops to aid Tuyuhun in the west, the defense of Liaodong was empty for a while. Silla also took the opportunity to seize the entire territory of Baekje, which belonged to the Tang Dynasty.

The Tang army was caught in a two-sided dilemma, and it took four years to put down the rebellion of the remnants of Goguryeo. Later, he sent troops to conquer Silla and forced the king of Silla, Kim Famin, to send an envoy to Tang to thank him. However, due to the rise of Tibet in the southwest, the imperial court was unable to take care of Liaodong, and Silla still occupied the old land of Baekje.

The Tang Dynasty was at war with the Tibetans, taking a defensive position on the eastern border, unwilling to confront Silla for a long time on the peninsula, wasting manpower and material resources. Therefore, under the favorable conditions of Silla's confession of apology, the capital was moved from Pyongyang, and the captured Goguryeo king Gozang was crowned the king of Joseon, and he was appointed as the governor of Liaodong Prefecture with the post of secretary of the Ministry of Works. In order to deal with the rise of Silla, the Tang Dynasty had to send the king of Goguryeo back to Liaodong. Use the Goguryeo people to govern the Goguryeo people. and repatriated the Goguryeo people who had previously moved into the interior to Liaodong. Use the Goguryeo people against the Silla people.

This move can be described as a failure. As a result, as soon as Gao Zang returned to Liaodong, he plotted to rebel. However, before they could start a rebellion, they were discovered, and Gao Zang and his people were sent back to the mainland. The Tang Dynasty then reassigned Gai Suwen's eldest son, Quan Nannu, to serve as the governor of Liaodong, and after Quan Nan arrived, he "pacified Liaodong, juxtaposed prefectures and counties, recruited redundant traffic, and leveled Fu." Strike hard labor, and the people will be lenient". He took measures such as streamlining the organization, recruiting displaced people, and rectifying the enlistment, and stabilized the Tang Dynasty's rule in Liaodong in just a few years.

During Wu Zetian's reign, the Khitans opposed the Tang Dynasty, first capturing Liaoxi, and then attacking Liaodong on a large scale.

The situation in Liaodong was in danger, and Gao Dewu, the third son of Gao Zang, who was the governor of Liaodong at the time, stepped forward and "used hundreds of soldiers as 20,000 soldiers", "broke the rebel thief Sun Wan and killed more than ten battles, and gave birth to 1,000 thieves". Gao Dewu thwarted the Khitan's attempt to occupy Liaodong and strategically cut off the Khitan East, which boosted the morale of the Tang army. "so that the country has no worries". For the military exploits of Gao Dewu's army, Tang Ting praised "each bounty with a scarlet robe, and the answer to sincerity and effectiveness is even self-recorded to be a meritorious officer".

After quelling the Khitan rebellion, the Tang Dynasty basically withdrew from eastern Liaodong and withdrew into western Liao. In the land of Liaodong, the Khitan was beaten by the Tang Dynasty and fell into a century-old downturn, and the Goguryeo nobles began to regain control of Liaodong.

However, at this time, the establishment of the Balhae Kingdom shattered the dream of the Goguryeo nobles to rebuild the Goguryeo Kingdom. With the strong rise of the Bohai State, Goguryeo became a vassal of the Bohai State.

At this time, the Tang Dynasty had basically abandoned Liaodong and went all out to compete with Tubo in the southwest. Therefore, in order to win the Bohai State to suppress the Khitan, many concessions were made to the Khitan, and the Andong Governor's Office was once moved to the west.

The center of gravity of the Bohai State is not in Liaodong, with the experience of the Khitan and Tang Dynasty wars, the Bohai Kingdom chose the strategy of "going east, crossing Liaoshui, protecting the northeast of Taibai Mountain, blocking the Ao Lou River, and self-consolidating the tree wall" from the beginning, and did not show the importance of Liaodong from the beginning, and then focused on the southern border of the Yalu River and the Ussuri River basin.

The land in Liaodong is fertile, far better than the bitter cold region of the Bohai Sea, but the Bohai Sea did not choose to establish a state here, because the full occupation of Liaodong means bordering the Tang Dynasty, and once the Tang Dynasty's strength is restored, it is difficult to ensure that it will not repeat the mistakes of Goguryeo.

Damen Yi, the son of Bohai Kaijun Da Zuorong, once said to the new monarch Dawuyi: "Tang, a big country, ten thousand times my soldiers, and I will die if I have a grudge with it." In the past, when Goryeo was prosperous, there were 300,000 soldiers, and the resistance to the Tang Dynasty was the enemy, which could be described as strong, and the Tang soldiers were swept away. Now we are one of the three of Goryeo, and the king will disobey it, and I can't. At this time, Bohai's own strength determined that it could not fully occupy Liaodong. The development of Liaodong requires a lot of manpower and material resources, and the Tang Dynasty has not been able to do it, let alone the Bohai Sea? Therefore, Bohai wisely chose to develop eastward from the beginning, giving up Liaodong, a territory destined to be full of disputes. Allowed to be occupied by the Goguryeo, but secretly controlled.

After the Anshi Rebellion, the Tang Dynasty crossed the sea and moved to Qingzhou, and then abandoned Liaodong and Liaoxi. The Tang Dynasty fell into a long-term rebellion, the son of Gaozang, the nephew of Wu Youyi, the king of Tang'an, the nephew of Wu Zetian, the governor of Liaodong Prefecture, Gao Jianwu, took the opportunity to oppose the Tang Dynasty and established a small Goguryeo with the support of the Bohai State.

Since then, for more than 100 years, in addition to Liaonan, which has been controlled by many Han Chinese, Liaodong and the northern part of the Samhan Peninsula, as well as Buyeo, have been controlled by the Goguryeo. However, after the Bohai Kingdom gradually weakened, the Khitans rose again. Over the years, the Khitans have been fighting with the Lu Long army for Yingzhou in western Liao, and there are also tribes that have been infiltrated into the area east of the Liao River and gradually invaded Liaozhong in eastern Liao.

Since 30 years ago, after the 11th monarch of the Bohai Kingdom, Dayi Zhen, completely annexed the small Goguryeo, the Goguryeo in Liaodong has become a courtier of the Bohai State. However, due to the reign of the tenth monarch Da Xuanxi, the Bohai State had fallen into a period of decline, and these Goguryeo nobles in Liaodong gradually regained power and gradually broke away from the control of the Bohai State.

Jili City, the current city lord Gao Dexin, is the descendant of Gao Jianwu after the Goguryeo royal family. Gao Dexin is more than 50 years old, and the Goguryeo royal family has always held important official positions in the Bohai Kingdom, holding great power. At this time, in addition to serving as the governor of Jili Prefecture in Liaodong, Gao Dexin also served as the political affairs of Zuo Pingzhang in Xuanzhao Province of Bohai State, and also inspected the school and the Ministry of Wisdom. The edict of the Bohai State is equivalent to the Menxia Province of the Tang Dynasty, Zuo Pingzhang is the second official of the Menxia Province. And the Ministry of Wisdom is equivalent to the military department of the Tang Dynasty.

In addition to serving as the political affairs of Zuo Pingzhang in Xuanzhao Province and the secretary of the Ministry of Wisdom, Gao Dexin also served as the general of Zuo Mengbenwei, one of the ten guards of the Bohai State.

The military system of the Bohai State is almost the same as that of the Tang Dynasty, imitating the sixteen guards of the Tang Dynasty, and there are ten guards, such as the left and right fierce guards, the left and right bear guards, the left and right guards, the south and left and right guards, and the north and left and right guards. In addition, there are also the left and right Shence armies, the left and right armies, etc., with hundreds of thousands of troops. Each guard has a general and a general. All parts of the country set up Zhechong Mansion, which is subordinate to the Ten Guards. Each Zhichong Prefecture has one Zhichong Captain, one Guoyi Commander on the left and right, one General Commander, one Bing Cao, and one Captain each in the army, and five school captains. The military and official system were almost the same as those of the Tang Dynasty, and although the Bohai State began to weaken after more than two hundred years, it still had a population of more than 5 million and hundreds of thousands of soldiers and horses.

Gao Dexin served as a high-ranking official in the Bohai State, but in fact, he was the same as the commander of the three towns of Hebei in the Tang Dynasty, but he was actually self-respecting. Most of the rest of the Goguryeo generals in Liaodong were like this, no different from the self-reliant marshals of the Tang Dynasty.

In the city of Jili, in the governor's palace.

"What?" Gao De stood up and grabbed the placket of Changshi Gaobing's shirt and asked. Although Gao Dexin is over fifty years old, he has no white hair, and he has been in charge of the army for a long time.

Gao Bing was just a civilian scholar, and when Gao Dexin mentioned it like this, his whole chest turned blue and he couldn't breathe. Several staff members next to him hurriedly stepped forward and tore apart Gao Dexin's arm, Gao Bing finally coughed a few times, his face recovered some blood, and he touched his neck with his hand and said: "Weiba Mountain City is lost, the eldest prince is killed in battle, and the three thousand soldiers and horses of Weiba Mountain City are all wiped out!" ”

"Zhaokang died in battle? Lost the mountain city? Gao Dexin took a few steps back weakly, his face full of shock and sadness. Gao Zhaokang is his eldest son, just thirty years old, but he has his ethos, not only a good martial arts, but also proficient in the art of war, and won the support of Jili Prefecture, he has already announced that Dekang is the next governor of Jili Prefecture.

"How is that possible? The circumference of the mountain city of Weiba is five miles, built on the cliff, only a sheep intestine path can lead to the mountain city, the mountain city is easy to defend and difficult to attack, it is one of the five largest five mountain cities built by the Goguryeo Kingdom in Liaodong at the beginning, how did it suddenly fall, and Dekang and three thousand soldiers and horses were all wiped out? Gao Dexin couldn't believe it and asked again.

There was silence below, and no one could answer him. In fact, until now, Changshi has only received the news that Weiba Mountain City has been lost and the entire army has been annihilated. As for what the battle was like and how it was lost, he didn't know at all.

Gao Dexin gritted his teeth and said angrily: "What are you still doing here, quickly go and find out the news, who attacked the city, how to break through the mountain city, and how Dezhao and their entire army were wiped out, I want to know the news immediately." ”

Everyone nodded slightly, and they all walked out of the Governor's Mansion with their heads down. In fact, it is not only Gao Dexin who is difficult to accept this result, but all the generals are the same unbelievable, in the past, he always charged at the forefront of the war, and the eldest son Gao Zhaokang, who had always been praised by Gao Dexin with his strategy, actually died like this. With his ability, even if the invaders were numerous, at least they could hold on to the mountain city to wait for help, how could they be wiped out? (To be continued......)