Yuwentai marched east along the Weishui, confronted the Eastern Wei across the river, the two sides were camped about ten miles away from the river, only more than 20 miles apart, the battle in Guanzhong seemed to be about to break out, but it was always limited to the fight between the sentinels and horsemen.

On November 21, the two sides received news almost simultaneously that Rouran Khan Anapu had gathered his people in Mobei and sent troops to kill the Gaoche country, and there was no possibility of interfering in the war in the Central Plains.

On the Eastern Front, the news of Duan Shao's defeat of Yang Yaren in Xuzhou also reached Guanzhong, which also meant that Southern Liang tried to threaten Guandong with the Northern Expedition, forcing Gao's plan to return to aid was completely bankrupt, and if he wanted to retreat from the enemy, he could only count on Yuwentai himself to drive the Eastern Wei out of Guanzhong.

Yuwentai was anxious, and the father and son of the Gao family, who had no worries, especially Gao Cheng, also felt the pressure.

Unlike others, Gao Cheng had long known that Rouran was friendly with the Eastern Wei Dynasty, just to free up his hands to clean up the Gaoche Kingdom.

And the result of Rouran's attack on Gaoche, Gao Cheng also knows that according to historical records, Gaoche was destroyed in 541, if there is no accident, it is probably the battle that refers to Gaoche, Gaoche should be destroyed by Rouran at the beginning of the year, until the Turkic rebellion, Rouran has no opponent in the grassland.

Gao Huan's first expedition to the west, Rouran was just a small fight in the north, which was also because Anapu had to guard against the sneak attack of the Gaoche country, and his cousin, the Brahmin of the previous Khan Yujiulu of Rouran, was attacked by the Gaoche and fled to the Northern Wei Dynasty in embarrassment, so he had the opportunity to restore Anapu.

Therefore, this is also the best opportunity for the Eastern Wei to unify the north at present, once this opportunity is missed, until the Turkic rebellion, the Eastern Wei wants to advance westward, and the re-establishment of the hegemony of the steppe Rouran will inevitably interfere.

Harmony can not maintain a good relationship with each other, interests are fundamental, the Eastern Wei Dynasty wants to go west, Rouran also wants to go west, and they are afraid that each other will steal their butts, so the two sides are like brothers.

If the Eastern Wei Dynasty's Western Expedition fails, and Rouran perishes Gaoche, then Rouran's interest appeal will also change from friendship with the Eastern Wei Dynasty to interference in the Central Plains war, so as not to reunify the north.

This battle must be won.

Just when Gao Cheng was anxious about this, a piece of news he had been waiting for for a long time was finally sent to the camp, which was also the reason why the Eastern Wei Dynasty had been delayed for a long time, wasting food in vain, but always avoiding war.

It turned out that before entering the customs, when Gao Huan asked Gao Cheng about the strategy of breaking the enemy, Gao Cheng once put forward an idea:

That is, more than 10,000 Eastern Wei soldiers who were captured by Yuwentai and incorporated into the army during the defeat of the first Western Expedition.

He was not temporary, Gao Qingchu, who was familiar with history books, remembered that Gao Huan Shayuan was defeated in the original time and space, with 10,000 killed and 70,000 captured, Yuwentai selected 20,000 from the 70,000 captives and incorporated them into the army, and the rest were all released to the Eastern Wei Dynasty.

During the Battle of Heqiao, the remaining troops heard that Yuwentai was defeated, and immediately took advantage of the emptiness in Guanzhong to launch a rebellion, they occupied the small city attached to Chang'an, and even captured Xianyang, resulting in chaos in Guanzhong, until Yuwentai returned to the division, and was not pacified.

Coincidentally, during the Battle of the River Bridge, Zhu Hunyuan was beaten and fled alone, and his troops were captured to Hengnong, this group of Eastern Wei soldiers also chose to rebel, they once recaptured Hengnong City, according to the city, it was also broken by Yuwentai again, and hundreds of people were killed.

One of the reasons why the Eastern Wei soldiers were reluctant to surrender was that their family scrolls were all in Jinyang.

Another reason is that Gao Huan really doesn't have anything to say about the Xianbei of the Six Towns, and now he has launched a military salary, which is even better than the original time and space.

No matter how big Yuwentai's heart is, he doesn't dare to drag this group of Eastern Wei soldiers to the battlefield to fight a decisive battle with the Gao clan.

To put it simply, Gao Cheng's plan was a stalemate with Yuwentai on the front line, and at the same time clamor for the Eastern Wei Dynasty to cause chaos in the rear.

In this way, Yuwentai will inevitably fall into a dilemma and be in a dilemma.

If you are in a hurry to return to help, it may give the Eastern Wei an opportunity to take advantage of, and if you sit back and watch the chaos in the rear, Chang'an may be taken away by the soldiers.

In the process of Gao Cheng secretly contacting the Eastern Wei Dynasty, Yuwen's sister-in-law can be said to have made a great contribution, originally Gao Cheng wanted her to inquire about the news in Guanxi, but there was no major gain, but she never thought that she would lose the east corner and harvest the mulberry elm.

It is true that she has no access to important information as a woman, but as Yuwentai's own sister, she can calmly match the Eastern Wei secret agents with the pawns, after all, no one would have thought that Yuwentai's own sister had already been rebelled.

Now the Eastern Wei soldiers have been secretly assembled, and the day of the riot is agreed to be two days later, that is, on November 23.

After Gao Cheng received the information, he immediately met Gao Huan, Gao Huan saw him full of spring breeze, and guessed that the long-awaited time might be coming, he straightened up his waist and asked urgently:

"But there's news from the pawn?"

"Congratulations to my father, congratulations to my father, great things will be done."

At the same time as reporting the good news, he immediately handed the secret letter to Gao Huan.

After Gao Huan saw it, he couldn't hide the joy in his heart, and laughed out loud, as if he was laughing too loudly, so that he coughed violently.

Finally, Gao Cheng soothed his breath for him, and Gao Huan said with emotion:

"I never thought that the defeat in the past was the opportunity to win today, and the cause and effect are really difficult to guess."

Of course, these words were just Gao Huan's self-consolation for the defeat of the first Western Expedition, after all, if he was victorious, he would not be able to have the hardships he has now.

But Gao Cheng couldn't squeeze him, so he just smiled and agreed.

In the Eastern Wei Army, Gao Cheng played the role of the mastermind, Gao Huan was still the supreme commander in name, but it was Gao Cheng who really led the western expedition.

From the time he suggested using the Eastern Wei Dynasty to surrender his pawns, since entering the customs, whether it was stopping in the eastern part of Weibei, always unwilling to approach Chang'an, or building cities, and launching public opinion offensives, all actions have served one purpose:

Let Yuwentai march east to meet the enemy, causing the emptiness of Chang'an and the surrounding areas.

After all, if the Western Wei and Southern Liang coalition forces had been stationed in the hegemony, even if the Eastern Wei soldiers were loyal, they would not dare to make trouble, and they would be exposed if they were connected under Yuwentai's nose.

Yu Wentai is already preventing the rebellion of the soldiers, he eliminated these people from the army and scattered them among the people, but it is difficult to prevent the thieves day and night, who would have thought that his family would help the tandem of the soldiers.

In fact, the soldiers intended to rebel, but in the final analysis, they were not optimistic about the prospects of the Western Wei Dynasty, and Yu Fude, a native of Yongzhou, held the same view as the soldiers.

With the more exaggerated strength gap between the East and the West, as well as the behavior of millions of soldiers and civilians in the Eastern Wei Dynasty, Yu Fude had already had the idea of surrendering, and Gao Cheng sent people to contact him, and he hit it off, determined to just wait for the soldiers to make trouble, so he led the private soldiers of the family to respond and capture Xianyang, just as he did in the original time and space.

A crisis was brewing around Chang'an, but the Taiwei Wang Meng, the servant Zhou Huida and others who stayed in Chang'an, were not aware of it.