The cooperation between Ma Shuo and Zhang Xuan did have a great impact on the barbarians besieging Chishui City, and it also greatly reduced the pressure on Chishui City's defense, allowing those soldiers to get a little respite.

However, this situation lasted less than two days, and the situation changed subtly again.

A barbarian army of 50,000 people suddenly appeared near Chishui City and set up camp behind Ma Shuo and Zhang Xuan's men and horses, posing a great threat to Ma Shuo and Zhang Xuan's cavalry. If they are not careful, they will be flanked by the barbarians.

In this way, the only way to do it is to withdraw from the outskirts of Chishui City as soon as possible and go to the outskirts of the barbarian army. However, once this happens, their assistance to Chishui City will be greatly reduced, and the pressure on Chishui City will increase again.

After weighing it, Zhang Jiang still decided to take a step back for the time being.

Sure enough, not long after the cavalry withdrew, the original barbarians began to attack the city again. As for the later 50,000 people, although they did not join the siege team for the time being, they were firmly in the way of Ma Shuo and others attacking the barbarians.

For a while, the situation in Chishui City became serious.

At the same time, Bai Qi also received a letter of help from Zhang Xuan. After reading what Zhang Jiang described in the letter, Bai Qi frowned for the first time, because he found that the change in the situation was a bit unexpected for him.

The barbarians, who have never been good at planning, actually played tricks this time.

Obviously, such a situation does not resemble the practice of the barbarians.

Damn, it's all those Qin traitors, there must be Qin traitors who have given the barbarians ideas. Being able to mobilize so many barbarians at once, this Qin traitor's status among the barbarians is not low.

Zhang Qin, Su Yi.

These are the two most famous Qin traitors on the barbarian's side that Great Qin knows at present. These two notorious Qin traitors were named the righteous ministers of the left and right by the barbarian Da Dan Yu, and their status was equivalent to that of the prime minister of Great Qin. Bai Qi estimated that this time the barbarian's plan was probably related to one of these two people.

"Damn it!"

Bai Qi knew that if he resented Qin traitors now, as long as he couldn't catch them, there would be no way to deal with them. Therefore, the most important thing at the moment is how to relieve the siege of Chishui City. The other party obviously has the idea of encircling and sending reinforcements, so even if he brings over more than 300,000 troops from this side of the Hexi Corridor, he will suffer a lot of losses.

However, it is obviously impossible not to go yourself.

Go, be sure to go. However, you can't get into the trap of the other party. That's a bit tricky!

In this case, Bai Qi gathered his staff and discussed it repeatedly for a long time.

In the end, it was decided to divide the more than 300,000 men and horses in his hands into three armies, the front, the middle and the rear, and march one after another. Between each part, with an interval of ten miles, the 30,000 cavalry left behind, following the center, could rescue back and forth if necessary.

The purpose of dividing the front, middle and rear armies is to prevent all the horses from being ambushed by the other side, and under this arrangement, even if the other side ambushes one of them, the other two can be rescued in time.

After making a decision, Bai Qi immediately ordered the whole army to assemble as quickly as possible and send troops to Chishui City.

At the same time, in the name of the commander of the Western Army, Bai Qi once again issued a conscription order to the surrounding counties, requiring all counties, especially those that are relatively far away from the front line, to quickly dispatch troops and horses to reinforce Western Xinjiang.

Temporarily recruiting reinforcements, this is the power that Bai Qi has, but the total number of troops he temporarily recruits cannot exceed half of the total strength of the Western Army. Otherwise, he had to consult the royal family, which was ordered by the king of Qin.

When Bai Qi organized a large army to reinforce Chishui City, the cavalry on Zhang Xuan and Ma Shuo's side did not rest, although they could not fight with the barbarian army, but they still gave full play to the advantages of the cavalry and continued to harass.

At first, the barbarian army was not disturbed by it and sent men and horses to fight them, but after being killed by thousands in a row, the barbarians changed their strategy and held out.

When the harassment was ineffective, after Zhang Jiang discussed with Ma Shuo and others, he also adjusted his strategy in time.

Hundreds of thousands of troops besieged Chishui City, and the amount of grain and grass consumed by people eating horses and chewing every day was very large.

Therefore, the barbarians had to regularly transport grain and grass to this side from other places. Therefore, after some discussion, everyone decided to give full play to the advantage of cavalry and focus on attacking the opponent's grain and grass delivery team.

The scouts soon found the barbarians' food and forage routes.

Now that they have found the barbarians' grain and grass transportation routes, Zhang Xuan, Ma Shuo and the others are not polite. More than 20,000 cavalry, still divided into two routes, killed the barbarian grain and grass transportation team from different places.

Generally speaking, the combat effectiveness of the grain and grass transport team is much worse than that of the normal combat team, and this is no exception on the side of the barbarians. Although, during this time, the barbarians also deliberately increased the escort force on the side of the grain and grass transportation team, but under the impact of the cavalry, those guards were not able to play much role.

After driving away the team transporting grain and grass, Ma Shuo and the others did not take away the grain and grass, in fact, they couldn't take it away, so they directly burned the matter.

Watching the grain and grass being burned from afar, those barbarians were furious, especially the tribal leaders, who were even more angry and cut down the leaders of several small tribes responsible for the transportation of grain and grass.

Unexpectedly, Zhang Jiang and Ma Shuo succeeded several times, burning a large amount of grain and grass of the barbarians, which seriously affected the morale of the barbarians. However, as time went on, the upper echelons of the barbarians also figured out how to deal with it.

They drew some troops and horses from other places to strengthen the escort force for the transportation of grain and grass. Not only that, but they also deliberately transferred a group of cavalry from other places, and the number also reached about 10,000.

In this way, the actions of Zhang Xuan, Ma Shuo and others were once again restricted. In this case, it is naturally impossible for them to entangle with the opponent's cavalry, because once they are entangled by the opponent's cavalry, they will easily fall into the siege of the opponent's infantry army.

Once they are really besieged by the opposing infantry, the more than 20,000 people will be dumplings made by others.

Unable to attack the other party's grain and grass, Zhang Xuan and Ma Shuo did not bring people to attack the barbarian army again. Because at this time, the number of barbarians besieging Chishui City has increased to more than 200,000, and even if they attack and disturb them, they will not be able to have much impact on the other party.

In desperation, the two could only temporarily retreat to the side with their men and horses, and found a place to camp in the distance. In fact, after this period of continuous fighting, the cavalry really needed to take a good rest.

During this time, although certain results were achieved, there were also considerable losses on the cavalry side.

The 10,000 cavalry under Ma Shuo's command lost more than 500 in total during this time. And Zhang Xuan's side lost even more, there were originally 178,000 cavalry left, and now there are less than 15,000 left.

More than 20,000 people, if they don't have a good rest, sooner or later they will be dragged down by the barbarians.

While the cavalry was resting, Bai Qi's army was on an urgent march, because he also knew that the current situation in Chishui City was very critical.