When Sima Shi heard this, he immediately felt enlightened. In fact, what he was most worried about now was Cao Liang. Cao Liang was actively building a pontoon bridge and ferry boat, and once the construction was completed, he could be engaged in the battle of crossing the river at any time. Sima Shi is now making every effort to prevent and build a defense line of the Yellow River. The only purpose is to block Cao Liang's southward and block him north of the Yellow River.

But it’s not that simple to really want to block Cao Liang. Since retreating to the south bank of the Yellow River, Sima Shi has been considering this issue.

Sima was not too worried at first. After all, with the natural danger of the Yellow River, Sima was completely confident that he would block Cao Liang north of the Yellow River.

However, after Zhuge Dan's rebellion, the situation had new variables, which made Sima Shi a little worried. If Cao Liang and Zhuge Dan joined forces, the situation would be really uncontrollable.

So when Sima Lun heard that Sima Lun had a way to deal with the current situation, Sima Shi became quite curious. Could it be that even himself and some generals could not solve the problem Sima Lun really had a way to solve it?

Whether Sima Shi believes or not, it is always no harm to listen to it. Just talk about it and listen to it.

"Brother Ninth, don't keep it a secret. Just tell me what a trick is it?"

Sima Lun smiled slightly and said, "It's actually very simple. If Cao Liang is also faced with an enemy from both sides, wouldn't he have no time to look south? Brother can also take this opportunity to deal with Zhuge Dan first and then concentrate on dealing with Cao Liang."

"Let him be attacked from both sides?" Sima Shi was a little confused. Now Cao Liang has occupied the three states of Bingyouji, and all three states are located in the north. If the Sima army wants to attack Cao Liang forward and back, it must go around behind Bingyouji. This is almost an impossible problem, so Sima Shi could not think of any feasible solution for Sima Lun's strategy.

Sima Lun seemed to see through Sima Shi's thoughts and said, "Brother Ah doesn't have to send troops around the north at all, but is conducive to the Hu tribes such as the Huns and Xianbei. Facing large-scale harassment in the north, Cao Liang's rear is tight, so he will inevitably divide his troops to calm down. Naturally, he will not be able to cross the Yellow River south in a short period of time. Brother Ah can take advantage of this period to deal with Zhuge Dan and Wu and Shu in Huainan first. Without any worries, he will naturally no longer be afraid of Cao Liang's traitor."

Sima Shi said in confusion: "The Huns and Xianbei? They have not been defeated by Cao Liang. The Huns have long been in Bingzhou without a place, and the Xianbei people have also suffered heavy damage in western Liaoning. They fled north to the grasslands and deserts and had no plans to go south. The Ninth Brother wants to use them to check and balance Cao Liang, which is not easy."

It was not impossible for Sima Shi to use the Hu tribe to restrain Cao Liang's development in Youzhou, but this was a difficult thing in itself. When Cao Liang conquered the Xiongnu in the north and destroyed the Xiongnu in Bingzhou. At least within the Bingzhou area, the Xiongnu completely lost their ability to resist. Even if Sima Shi wanted to use such power, he could not use it at all.

As for the Xianbei people who unified the grassland and desert, during the Battle of western Liaoning, all the three major tribes of the Xianbei in the eastern region were destroyed by Cao Liang. Although the strength of the Xianbei in the central region was not damaged, they were also afraid of Cao Liang and retreated from the border area, without any idea of ​​fighting for heroism.

At this time, even if Sima Shi was willing to contact the Xianbei people, it would probably be difficult to find it. The grassland is vast and sparsely populated. The Xianbei people, like other tribes that originally controlled the grassland, lived by water and grass. How easy is it to find them?

Sima Lun said, "Liu Bao, the left wise king of the Xiongnu, who was defeated and died, had a son named Liu Yuan. When Bingzhou failed, he was secretly sent to Shuofang by Liu Bao. Now Liu Yuan has grown up. Not only is he extraordinary in martial arts, he is skilled in bows and horses, but he is also both civil and martial, and has extraordinary wisdom. Now he has unified the Xiongnu tribes in Shuofang, and even the Malan Qiang Lushui Hu tribes have surrendered to him. Liu Yuan always thought of avenging his father and was irreconcilable with Cao Liang. This brother is now using him to grant him the governor of Bingzhou and let him send troops to attack Cao Liang. It is a useful chess piece!"

Although Simalun has been studying in Luoyang for many years, he likes to read memorials from all over the world. Even the old memorials that are not loved by anyone can read Simalun can be read out of the old paper pile, which is interesting to see.

Among them, a memorial from Yongzhou attracted Sima Lun's attention. Lushuihu of Beidi County robbed Niyang and Fuping, and abducted thousands of people and countless cattle and sheep.

It is only a common occurrence for Hu people to invade the territory. They plunder people, property and harm border counties. In Yongzhou, Guo Huai's main defense forces were concentrated on the Qinling line to prevent the invasion of Shu people. Therefore, relatively speaking, the defense power of the northern line of Yongzhou was a little weaker. To deal with the invasion of Hu people, they could only defend the city. The Hu cavalry was fierce and fierce, coming and going like the wind, and the Wei army really had no choice but to do anything to them.

This simple memorial was just a routine report by officials from Beidi County. After reporting to the court, they only made simple memorials at the Shangshutai. Many things like this such arbitrary and robbery occurred every year, so the court did not have any corresponding measures. At most, the only thing they could do was to let it go. After all, the current military force had more important things to do. The matter of the barbarians was just a tinea scabies, and it did not attract the attention of the court at all. This memorial was thrown into the pile of old papers without even seeing the Sima Shi. If the court had not had relevant preservation regulations, such memorials would have been discarded soon.

But Sima Lun discovered some unusual things from the outskirts, such as the Lushuihu invasion this time, and the population they plundered was not left in the tribe, but was sent far away to Gaonu's area.

Logically speaking, Lu Shuihu's range of activities is roughly in the An Ding, North and Xinping areas. After they plundered the population, they did not stay within the tribe, but instead sent it to Gaonu hundreds of miles away. This seems a bit unreasonable.

Since Sima Lun felt that it was unusual, he went to read the memorials over the years and suddenly discovered that in the Gaonu and Kushi area, the leader of the tribe was Liu Yuan, the son of Liu Bao, the left wise king of the Xiongnu in the Bingzhou left.

When the Xiongnu in Bingzhou was destroyed, Liu Yuan was sent to the Shuofang area by Liu Bao, and at the same time, some of the elite Xiongnu soldiers brought with him. After more than ten years, Liu Yuan gradually grew up and relied on the people left by Liu Bao to unify the Xiongnu tribes in Shuofang, and suppressed the Hu tribes such as Lu Shuihu, Malan Qiang, and became the overlord of Hexi.
Chapter completed!