Han Bi was taught by Qiyun and brought her words and the Yuyan brand to Tuoba Tao. Tuoba Tao heard that the Qing concubine in the summer palace had taken over Linghu Pei, and planned for the Wei army to cooperate with Tuyuhun in the northwest to attack Helianding's Xia Kingdom from the east and west. Tuoba Tao was overjoyed in his heart, and concluded that Helian Ding's newly sealed Yuehua Qing Concubine was undoubtedly Qiyun.

Tuoba Tao rewarded the cold and sent an envoy with her to carry the Yuyan brand to the Tugu Hun in the west of the river.

Tuyuhun was originally a branch of the Xianbei Murong Department in Liaodong, and parted ways with the branch of the Murong Department in the Central Plains, but still worshiped his Murong ancestors. The department grew from water and grass, and continued to migrate westward, active in the Qilian Mountains and the upper valleys of the Yellow River, and was located on the western side of the Xia Kingdom.

For more than 100 years, the war in the north has been chaotic, and the Yan State established by the Murong clan in the Central Plains has risen and fallen several times and finally perished. The Tuyuhun tribe was far away in the northwest and was not involved in disputes, but the tribe continued to grow and became a force to be reckoned with in the Hexi region. Ten years ago, Tuyuhun had climbed the Xilean Mountain, looking for the source of the river, in order to find a way to the lower reaches of the Yangtze River, sent an envoy to Jiankang, and paid tribute to Liu Song, who was named the Shazhou Thorn History by Liu Song, and had a friendly relationship with Liu Song.

After Tuoba Tao obtained the Murong Imperial Family's Yuyan card, he immediately sent an envoy to negotiate with Murong Mubi, the Khan of the Tuyuhun Tribe, to conspire with Helianding. After Murong Mubi saw the Yuyan card of the Murong royal family, he thought that Wei and Song were both big countries, and it was inconvenient to offend, so he met with the envoys of Wei and sent people to inquire about the war between Wei and Song.

In the third year of Shenlu, there was a drought in the summer, and the water in the Surabaya River seeped into the ground, and the boats of Liu Song's navy could not move normally, and they only walked ten miles a day. It took three months for General Song Guoyou to enter the Yellow River in Yanzhi, and it was almost autumn at this time.

Considering that the troops south of the Yellow River were too small, Tuoba Tao followed the advice of Cui Hao and others, took the initiative to withdraw the defenders, and ordered the army of the three towns in the south of the Yellow River to cross north.

To Yanzhi led the Song army to occupy the south bank of the Yellow River until Yu Hengguan. The Song army did not fight a big battle, and easily occupied four cities such as Luoyang and Huatai, and the troops from the west even entered Tongguan, and the Song army was overjoyed.

Zhi Yanzhi and others ignored the counterattack prepared by the Wei army at any time, and just blindly reported to Liu Yilong. Liu Yilong was overjoyed, despised the Wei army, agreed to the alliance with the Xia State Helianding, and declared to the world that the two sides agreed to jointly attack the northern Wei River north of the river, and after the matter was completed, the east of Heng Mountain returned to Song, and the west of Heng Mountain returned to Xia.

Tuoba Tao heard that the Xia and Song Dynasty Alliance was concluded, and determined that Lan Yuehua was Feng Qiyun, and the fuse of the previous Wei and Song Dynasty wars was a conspiracy planned by Helian Ding. He decided to crusade against the Xia Kingdom first, defeat Helianding, and rescue Qiyun. The ministers of Wei were worried that the Song army in the south would cross the river and enter Hebei.

Tuoba Tao asked Cui Hao for advice, and Cui Hao also agreed to crusade against Xia Guo first, and he analyzed confidently: "Liu Song and Xia Guo have a feud about the bloody war between China, and now they are temporarily united for the sake of interests, and they seem to be powerful, but in fact, they are fierce and suspicious of each other. The Song army had a major weakness in arranging its troops, and on the front that stretched for more than 2,000 miles from east to west in Henan, it dispersed its troops, with no more than a few thousand people in each place. With such a formation, the defense is acceptable, and the attack across the river is absolutely impossible. The stump of Helian Ding was easily destroyed, and His Majesty led the army to collapse as soon as it attacked. At that time, the Wei army will go east out of Tongguan and sweep Henan, and it will be victorious. ”

Tuoba Tao acted according to the plan, and named Xiping Gong'an Jiejie as the champion general, leading the army to stand by in Hebei, responsible for blocking the Southern Korean army north of the Yellow River. Tuoba Tao himself personally led a large army to attack Pingliang, and sent Anxi general Gu Bi to attack Guanzhong Anding.

Helian saw that the two armies of Wei and Song were in full swing, and the Wei army seemed to be cowardly defeated and retreated, and he thought that this was a God-given opportunity to recover the old capital of Tongwan. So, he left Qiyun and others in the Pingliang Palace, and sent his whole army to attack the northeast, leaving Shanggu Gonghe Lian Shegan and others to guard Pingliang.

After Helian Ding defeated the city of Guanzhong, he prepared to take advantage of the victory to recover Tongwan. At this moment, news came that Tuoba Tao left An Jie and others to lead a part of the Wei army to confront the Song army, and personally led the main force to cross the Yellow River to the west and enter Pingliang.

When this news came, Helian Ding was shocked and fidgeted. Pingliang is his capital and his foothold. He was even more worried that Tuoba Tao would break through Pingliang and see Qiyun. At that time, the truth will be revealed to the world, and Liu Yilong of the Song State will not only abolish the covenant, but I am afraid that he will also turn against him.

So, Helian Ding led 20,000 cavalry and rushed to Pingliang in the starry night to rescue the emergency. Unexpectedly, Tuoba Tao was like a god, and sent the cavalry of the Gaocha Division, which had surrendered to Wei, to attack him on the way.

Helian was caught off guard and fled in defeat. The Wei army, under the leadership of Tuoba Tao, surrounded and intercepted all the way, trapping Helianding's army in Changwu. Tuoba Tao ordered to block the water and grass resources of the Xia army, and the Xia army soon became hungry and thirsty and could not support it.

Helian Ding had no choice but to send troops to challenge, and was defeated by Qiu Jun, the general of Wei Wuwei, with tens of thousands of dead. Helian was seriously wounded and fled on horseback, collecting the remnants and the 50,000 fleeing people along the way, and retreating west to Tianshui. And the important town of Anding was also broken by Gu Bi, the general of Anxi of Wei, and only a few lonely cities such as Pingliang were left in Xia State.

Tianshui is the Silk Road must pass through the place and the place where the soldiers must fight, the land is fertile, the terrain is open, the peaks are green and the water is prosperous, the water and grass are abundant, it is a good place for grazing horses and raising livestock, and it is the birthplace of the early Qin people.

Helian Ding occupies Tianshui, and can attack and retreat. He ordered someone to quietly take Qiyun and the harem concubines to Tianshui, including Zi Mengqing, who was beaten into the cold palace.

Next, the Wei army was overwhelmed, and the news of the defeat of the Xia army kept coming. Shanggu Gonghe couldn't hold on, went out of the city and surrendered, and the capital fell Pingliang. Then, the guards of the Xia army such as Chang'an, Linjin, and Wugong all abandoned the city and left, and Guanzhong was occupied by the Wei army of Tuoba Tao-

At this moment, the Henan area of the eastern front where the Wei and Song dynasties were at war has also been reported frequently.

Almost every move of the Song army was calculated by Tuoba Tao, Cui Hao and others. The Song army captured Luoyang, Henan Province, Tiger Prison and other places of four battles, but could not defend them, and guarded them along the Yellow River for thousands of miles, with weak troops; When the autumn season was high and the horses were fat, the Wei army rode south, and Liu Song's defense in Henan quickly collapsed.

The right general of the Song State sent his troops to Yanzhi to cross the Yellow River and attack Yesaka of the Wei State. The champion general An Jiedu led the army to block the Song army, beheading more than 3,000 people, and the Song army fell into the water and countless people died.

In the autumn of that year, the Wei army gathered its main force and began to launch a counterattack, and An Jie led his army to first break through the dilapidated fortifications and unrepaired city defense of Kim Yong City. Then, outwitting Luoyang, the cavalry of the Northern Wei Dynasty was extremely fierce, chased and fought fiercely, beheaded more than 5,000 Liu Song troops, and captured more than 20 generals of the Liu Song army of the Southern Dynasty.

After that, An Jie turned around and attacked the slide hanging behind him. Liu Yilong sent Tan Daoji, a general from the Beifu army, to rescue the slippery platform. The Wei army attacked their grain and grass supply lines, blocking Tan Daoji's rescue force in the middle of the road. Tuoba Tao learned that An Jie was in danger, and vigorously reinforced and stepped up the siege of the slipway. After holding out for a few months, the Song army ran out of food and had to rely on smoked rats for food.

The reinforced Song army was besieged in the middle of the road, the grain and grass were tight, and once faced the danger of annihilation of the whole army, but fortunately, the governor Tan Daoji was in a hurry, covered with a small amount of white rice on the sand, deceived the Wei army, and relied on the strategy of "singing and measuring the sand" to protect the army to withdraw to the south of the Yangtze River.

Later, An Jie and the soldiers who came to reinforce broke through the slipway and returned to Beijing. Soon, An Jie, who had accumulated hard work and made many military exploits, died, and was posthumously awarded the general of the southern expedition, and was knighted as the king, nicknamed "Xiang".

In this battle in the third year of Shenji, Tuoba Tao faced the flanking attack posture of Liu Yilong and Helianding, calmly deployed, first attacked Xia and then attacked Song, and skillfully adopted strategies such as attacking it to save, besieging the city and sending reinforcements, showing weakness and feints to retreat, so he won one after another. The Northern Expedition launched by Liu Yilong of the Song State ended in failure.