During this period of time, Cao Liang has been annoyed by these spies of Sima Jun, Fang Bu is responsible for the perimeter protection of the cavalry battalion station, and has captured and killed many spies, but Sima Jun's side is still like a moth to a fire, constantly sending people to spy on the military situation, trying to know the secrets in the cavalry battalion.

It's really curious to kill the cat, the more heavily guarded the cavalry battalion, the more vulnerable it is to be spied by the opponent, and before mastering the secret of the cavalry battalion, Sima Jun's spies will definitely not give up.

This undoubtedly brought great difficulties to Fang Bu's protection, although Fang Bu had made the defense of the three major cavalry camps like an iron bucket, but the hundred secrets eventually became untenable, and under the infiltration of Sima Jun's spies in every possible way, no one could guarantee that the secrets in the military camp would not be discovered by spies.

So Cao Liang set up a game, deliberately letting Sima Jun's spies "succeed" once, after they thought that they had mastered the secret of the Bingzhou cavalry, they might be less interested in the cavalry battalion, and they would no longer be so persistent in exploring this secret.

In fact, this way of sending food to the barracks is a flaw deliberately left, if according to normal operation, no one is allowed to enter the barracks, even if it is to send food and vegetables, at most it can only be sent to the gate of the barracks, and naturally there will be soldiers in the room to sign for it, and how can outsiders easily enter the barracks.

So this flaw itself was left by Fang Bu to Sima Jun's spies, Du Feng really took the bait after detecting this situation, they designed to set fire to the pawnshop next door to Changji's shop, and deliberately let the fire reach Changji's shop, so that the vegetables to be sent to the barracks were burned.

The next thing is naturally that the waterway is completed, and the state army deliberately opened a back door for them, and Sima Jun's spies couldn't wait to drill into it, they thought they had a plan, but they didn't know that they had already fallen into the trap, and what they saw was just what Cao Liang wanted them to see.

One of his subordinates whispered to the other party: "Commander Fang, just let them go?" ”

Fang Bu sneered and said: "If you run away and the monk can't run the temple, this Liu Ji shop sent someone to keep an eye on me, don't startle the snake first, and when you have a chance in the future, you will serve me a pot!" ”

Of course, now is not the time for Fang Bu to make a move, and this news needs to be passed back to Luoyang, but after being targeted by the Military Division, the nest of Sima Jun's spy is basically cold.

Du Feng returned to Liu Ji's shop, and after a few words, he was ready to leave to return to Luoyang, now that he had got what he wanted to take, there was naturally no need to stay in Bingzhou.

Liu Dong and they are naturally very excited, this time they have completed the task with the black wolf, and they will definitely be rewarded by Luoyang. And to complete this task, it has also made it a lot easier for them, Bi Jian has already folded into two military horses and a lot of brothers for this task, if this task is delayed for a long time, I am afraid that more people will suffer.

Du Feng left Bingzhou, disguised himself as a business traveler, and returned to Luoyang all the way.

He first reported to Sima Shi, and when Sima Shi heard the news, he was naturally extremely excited, and immediately took Du Feng to meet Sima Yi, and truthfully reported the news to Sima Yi.

"You mean Cao Liang is training a new kind of cavalry battle formation?" Sima Yi's face was calm and waveless.

Du Feng bowed down and said: "Yes, the lowly position is where it is, but the lowly position has been infiltrated for a short time, and I have only seen two changes in the battle formation, and these two changes have been drawn into a map, please take a look at it." ”

As he spoke, Du Feng presented the two battle formation change diagrams he had drawn from memory, and Sima Shi took them and spread them on the several cases in front of Sima Yi.

Sima Yi is familiar with all kinds of battle formation changes, when he saw the new battle formation of the Bingzhou army, his eyes suddenly lit up, indeed this kind of battle formation change method is something he has never seen before, that is to say, the Bingzhou cavalry is indeed practicing a new formation, and it is no wonder that Cao Liang will act secretly and set up strict guards around the military camp, it seems that he does not want them to know this new formation, and wants to carry out a surprise attack in the future battle.

Sima Yi disagrees with this, perhaps this new formation can improve the combat effectiveness of the Bingzhou cavalry to a certain extent, but this promotion should be quite limited, the real improvement of the cavalry strength, or Sima Yi's use of this way of expanding the army, such a promotion effect is real, Sima Yi believes that after his cavalry completes the expansion of the army, he can form a crushing trend against the Bingzhou cavalry.

This kind of advantage can never be made up for by relying on one or two new formations alone, so Sima Yi is no longer so concerned about the Bingzhou cavalry, and secretly said in his heart that relying on the men and horses of the Bingzhou cavalry, Cao Liang will not be able to smooth out the gap between the two sides even if he plays tricks.

For this, Sima Yi still has enough confidence.

"Captain Du, you did a good job this time, you worked hard." Sima Yi praised Du Feng.

Du Feng suppressed the joy in his heart, bowed his head and said: "It is an honor to be able to serve the Taifu, although it is a humble honor. ”

After Du Feng retreated, Sima Yi said to Sima Shi: "Master, what do you think of this? ”

Sima Shi said: "The child thinks that Cao Liang must have known about our expansion of cavalry, so he is panicked, but with the financial resources and manpower of the state, it is difficult to expand the number of cavalry, so Cao Liang only played some tricks on the cavalry formation, according to the child's opinion, even if he drilled a new formation, it is not afraid, as long as my Sima family's army arrives, Cao Liang's men and horses will be powdered." ”

Sima Yi nodded, he also completely agreed with Sima Shi's judgment, because of the merger of the state army, it was secret, which made Sima Yi very nervous, and now the truth is revealed, Cao Liang's actions were not unexpected by Sima Yi, so Sima Yi was relieved.

In the next time, Sima Yi will inevitably pay close attention to the training of the new cavalry army, and give him half a year's time, this cavalry team will begin to take shape, and then it will be the time when he will go on the Northern Expedition and go straight to Jinyang.

Bingzhou will also be Sima Yi's last knot, and if Cao Liang is eliminated, Sima Yi will really die.

Sima Yi's country is not easy to come by, this is the result of Sima Yi's life of enduring humiliation, Sima Yi hopes to eliminate all hidden dangers in his lifetime, and then smoothly hand over power to his descendants and grandchildren.