Tongyang Fort, in fact, is already behind the Tang army, Tongyang Fort is about 160 miles away from the Black Bone City, so it is too late to return at this time.

Fortunately, the army is advancing in three ways, so although there are traces left, there is no need to care about the traces.

They don't know how many times they have traveled back and forth in these places, and these traces will not be suspected.

After Li Shiji's meeting, the three armies immediately began to return, the other two routes are located in the north and south direction of the return to Tongyang Fort, and the other two armies will directly arrive next to Tongyang Fort and then enter the mountains and forests, and cross the mountains to reach the vicinity of Tongyang Fort.

Because the official road of Tongyangbao is the closest official road to Liaodong City, from the other two roads, according to the advance speed of the infantry, it will take at least ten more days or so, which must be unacceptable to the Goguryeo army.

So they must go this way.

The encirclement drawn by Li Shiji is large enough, if there is really a large army attacking, let alone 60,000, even if it is estimated that 160,000 can enter.

And it is easy to hide more than 100,000 troops on the surrounding mountains.

Fortunately, they have enough time now, although heavy ballistae and other things are not easy to carry, so they do not carry them, and on the mountains surrounded on all sides, it is enough to have archers and medium-sized bed crossbows.

Three days later, when Khadar led 50,000 Goguryeo troops to cross the Datong River, the Tang army led by Li Shiji had rushed to the vicinity of Tongyang Fort, and there were more than 1,000 people in Tongyang Fort.

Although it is said that this is Goguryeo's own people, after the war, these people will inevitably be killed and wounded, so it is better to directly relocate them. As an area ravaged by the Tang Dynasty cavalry, it is reasonable that this small city has already been destroyed and killed, right?

In order to be more realistic, Li Shiji also had people deliberately damage a lot of houses in the city, and then let the war horses gallop around a few times inside, smashing the city gate again, and then they evacuated here and entered the surrounding mountains.

Thirty miles west of Tongyang Fort, the canyon here is closed, and the Tang Dynasty will directly establish a defense line here, and the portable barricade carriages originally used to form a camp will directly form a simple city wall here, and all the large bed crossbows will stay behind this city wall.

Although the peaks on both sides of this road are not high, they are steep and densely forested, and it is impossible to crawl around from the mountains on both sides.

The reason for establishing a defensive line in this place is also to make a worst-case plan, to avoid Hudar dogs jumping over the wall in a hurry and forcibly attacking the front to break through.

At that time, the only people who stood in the way of the opponent's advance were the 20,000 cavalry of Che Bi Ho Li, and the about 5,000 infantry who operated the bed crossbow.

After all, the area left behind in several other directions is too large, and all the other soldiers have to be surrounded from all sides.

Of course, if all went well, Khudar would not have found out.

According to the information given by Liu Zhao, although Khudar fought bravely, he was very poor in strategy, he was born in Xibu, he was also a nomad, he was born to know how to fight, but he didn't read much, because he was loyal to Yuangai Suwen, so he was able to take on this important responsibility.

There are few excellent generals in the entire Goguryeo, among which Yu Ling and others are not all the way to defend Silla, and some of the remaining generals have been distributed in various important cities throughout Goguryeo.

Therefore, Khudar is already a trustworthy general under Yuangai Suvin.

With his level, it is not easy to see that all this is arranged, especially when the time given to him by Yuangai Suwen is relatively urgent.

Just as Li Shiji guessed, Hudar, who finally crossed the river, contacted the guards of the Black Bone City as soon as possible.

After announcing the order of Yuangai Suwen, Hudar was to lead the 10,000 cavalry of the Black Bone City and the 50,000 cavalry he led to form an army of 60,000 and set off directly.

"General Hudar, the soldiers have been on the road for a few days, and there is only half a day left until dark today, so it is better to temporarily camp outside the city to rest and wait until tomorrow daylight." The guard of the Black Bone City reluctantly opened his mouth to suggest.

"No, General Yuan's order, I want to rush to Liaodong City as quickly as possible, now we have lost contact with Liaodong City for nearly twenty days, if it continues, once Liaodong City is broken, then the entire Liaodong front line will completely collapse." Hudar directly rejected the other party's suggestion.

"General Hudar, it's not that I don't agree to hurry, but recently the cavalry of the Tang Dynasty has shown signs of large-scale assembly, if you are tired and hurrying, it is very likely that the Tang cavalry will be directly raided by the Tang cavalry, which is waiting for work, causing huge losses."

"Although our scouts can't reach Liaodong City, it's still okay to reconnoiter near Black Bone City, and the scouts will return soon, if they have to go, they will wait until they get the news of the scouts before leaving." The defender of the Black Bone City said helplessly.

It's not that he cares much about Hudar's life or death, but that he and Hudar are now one, and if Hudar suffers heavy losses, then the Black Bone City will not be far from being breached.

Like them, no one knows how Datang will deal with them, in case the city is broken, they will be killed by Datang, so is it wrong?

"Okay." Hudar thought about it and didn't refuse.

What the Black Bone City Guards said was also good, they just waited for an hour or so, and they waited for the scouts who went out to detect intelligence.

"Two generals Qiqi, we found a large number of Tang cavalry assembled at a distance of about twenty miles ahead, and we paid the price of three brothers to get the latest information, and there are at least fifteen thousand Tang cavalry gathered there, all of which are heavy armored cavalry." Several scouts reported with trepidation.

Fifteen thousand!

"The Datang cavalry has never gathered such a large number, it seems that our previous intelligence is right, the Datang has at least more than 20,000 cavalry gathered in this area. It seems that Datang has received the news that General Hudar has arrived here, and probably guessed that you are going to support Liaodong City, so they gathered to stop you from supporting. The defender of the Black Bone City immediately spoke.

This is the simplest analysis of the current situation.

People like Hudar who are not good at strategy can roughly analyze it.

"Thank you for the reminder, if it weren't for your reminder, we might have fallen into the enemy's plan, but now it seems that we can't hurry up, but this is also good news, which proves that Liaodong City has not fallen yet, but I don't know how long they can support it." Hudar nodded and thanked the guards of the Black Bone City before speaking.