After pacifying Wang Ling in Huainan, it can be said that a major trouble for Sima Yi was eliminated, and the position of the Sima family in the court was completely consolidated.

The most vivid example is Youzhou's Biqiu Jian, since the Gaopingling Incident, Biqiu Jian has made frequent small moves, although he did not rebel as clearly as Huainan in Bingzhou, but Sima Yi knew that Biqiu Jian, who had not dealt with him much, was just waiting for an opportunity, if he was defeated in Huainan or fought with Wang Ling, then Biqiu Jian was likely to take advantage of the situation to raise troops and rebel in Youzhou.

However, with the defeat of Wang Ling, Biqiu Jian naturally became honest and settled a lot, it is estimated that he is also weighing his own catties, Wang Ling has the soldiers and horses of the important town of Huainan and is still invincible, he is in a desolate and remote Youzhou, how can he be Sima Yi's opponent?

After Biqiu Jian confessed, Sima Yi no longer had to worry about the problem of fighting on two fronts, and he could now think about how to deal with Cao Liang in Bingzhou.

To be honest, although the fight against Wang Ling dragged on for a long time, adding up to more than two years, Sima Yi was actually very easy and skillful in fighting this kind of battle, and it was easy to use the army to do it, and there was no difficulty at all.

But dealing with Cao Liang, Sima Yi felt that it was much more difficult, and the last battle of the party made Sima Yi a little anxious, and now he still has a headache when he thinks about it.

Therefore, Sima Yi is not as urgent as before, he is ready to let the army rest for a period of time, and formulate a corresponding battle plan, this time to fight and merge the state, you can't act as hastily as last time, or don't fight, if you want to fight, you must completely solve the problem of merging the state, and you can't give Cao Liang any chance.

After Sima Yi returned to Luoyang, he also carefully studied Cao Liang's tactics, and indeed Cao Liang's tactical style of play was not the inherent routines in the previous war books and tactics, but it was basically consistent with Sun Tzu's theory of concentrating superior forces to break each one in the Art of War, and the way of the art of war was also ever-changing.

However, Cao Liang's tactics, pay more attention to the army's mobility ability, in the battle of the party, Cao Liang first concentrated his forces to defeat the Chen Tai army from the sheep intestine saka, and then turned to Baishuichuan, annihilated Hu Zun's department, from the bowl city to the Baishui River, more than 300 miles apart, such a long distance, Cao Liang only took one night to complete the turning, its flexible mobility is breathtaking.

Sima Yi is a diligent learner, but also a person who is good at thinking, and he often uses different means to deal with different people. To deal with the brave and unscrupulous Meng Da, he can double the way, break through hundreds of miles in a day, and catch Meng Da off guard; To deal with the treacherous Zhuge Liang, he responded to all changes with the same, resisted the battle steadily, did not move the eight winds, and relied on a procrastination trick to exhaust Zhuge Liang to death in Wuzhangyuan; Fighting Gongsun Yuan, who was stubborn and self-serving, Sima Yi attacked hard and crushed it with his strength; Dealing with Wang Ling, Sima Yi showed his patience and perseverance enough, and trapped Wang Ling to death.

Sima Yi has so many opponents in his life, and they have surrendered to him one by one, but this Cao Liang is the most difficult character to deal with in Sima Yi's opinion.

Fortunately, Cao Liang occupies a vast and sparsely populated and relatively barren state, and there is no great development potential, otherwise, the time of these two years is enough for Cao Liang to sit big.

If you want to restrain the enemy's strengths, you must have more powerful mobility than the merger army, and if you want to improve the mobility of the army, you must strengthen the cavalry construction of the army.

Cavalry has always been the advantage of the Wei army, but this advantage is relative to Shu and Wu, in fact, compared with the cavalry of the Xiongnu Xianbei people, the cavalry of Wei occupies a much smaller proportion of the army, and the combat effectiveness is much inferior to these Hu people.

And Cao Liang's cavalry had a long-term battle with the Xiongnu Xianbei cavalry before, and was able to win the battle, which proves that the strength of the Bingzhou cavalry is superior to these Hu cavalry, and compared with the Sima army cavalry, it does have a considerable advantage.

In the last battle of Shangdang, the flexibility of the Bingzhou army was beyond the reach of Sima Jun, and the rhythm of the entire battlefield was in the hands of Cao Liang, which made Sima Yi very passive.

If you want to reverse this unfavorable situation, you must work the construction of cavalry, and Sima Yi does not have to worry about this, after all, he currently controls most of the world's manpower and material resources, and if he wants to develop and expand the cavalry team, it is just a matter of one sentence.

However, if you want to really cultivate cavalry with strong combat power, it will take a long time, so Sima Yi can't suddenly launch a blitzkrieg like he did when he fights Zhunnan, and it still needs to be considered in the long run.

First of all, Sima Yi gave Guo Huai an order to transfer tens of thousands of good horses from Longxi to Luoyang, which is the horse breeding base of Wei, and the war horses produced here almost account for more than seventy percent of the war horses needed by Wei.

Secondly, Sima Yi recruited a large number of riders, whether they were military or civilian, as long as they were good at riding and shooting, they would be hired first, and Sima Yi began to do his best to build a huge cavalry force.

However, others disagreed with Sima Yi's steady tactics, believing that Sima Jun should carry the momentum of Huainan's great victory, take advantage of the victory, and directly take the state, with the current strength of the Sima army, it is enough to form a crushing trend against the state army, so why should it be necessary to train cavalry in a long stream.

Those who hold this view include Sima Shi and Sima Zhao brothers.

Sima Shi doesn't need to say it, and Sima Zhao is the most urgent in terms of conquest of Cao Liang, and he can't wait to send troops to merge with the state immediately and take Cao Liang's head.

When Sima Yi went to Huainan, Sima Zhao stayed in Luoyang, during which he also experienced the battle of Cao Liang's soldiers in Hanoi, and in general, Sima Yi was quite satisfied with Sima Zhao's performance.

After all, there is not much time left for Sima Yi, and what he desperately hopes for most is to see his sons grow up and take over the responsibility, so that he can die blindly.

Sima Shi is the successor he has cultivated wholeheartedly, and Sima Zhao is also the person he wants to reuse, the other sons are either young or Sima Yi thinks it is embarrassing and useful, in short, at present, Sima Yi relies on only Sima Shi and Sima Zhao.