Nominally, in order to disperse the pressure on Hanzhong, Zhao Yun once again raised troops to settle in Badong, and this time directly deployed troops to the west of Jiangzhou and on the banks of the Yanjiang River, posing as a posture to capture Jiangzhou.

The reason why I say "nominally" is because Zhao Yun had already "secretly Chen Cang" and rushed west with the main force......

Badong seems to be in the south of Hanzhong, as if you can reach Shangyong, Xicheng and Hanzhong by going north from Yufu slightly, but in fact, between Badong and Hanzhong, it is separated by Daba Mountain!

To enter Hanzhong from Ba County, you can only take the Bazhong area, although it is also separated by Micang Mountain, which is also part of Daba Mountain in a broad sense, but the altitude is lower, and there are rugged mountain roads to walk, but at least it is not a Jedi.

In later generations, more than 13,000 meters of Micang Mountain tunnel was dug in a section of Micang Mountain, connecting Bashan.

As for Brazil and the southern part of the Bazhong region, they are now under the control of Zhang Lu, and when Zhang Lu evacuated from Nanzheng in order to avoid Cao Cao, he came to Hanchang to avoid disaster - that is, Bazhong in later generations.

And the main force led by Zhao Yun and originally stationed in Badong County was preparing to cross Bucao Shui, cross Tongluo Mountain, and go to Hanchang, so as to enter Hanzhong and "support" Zhang Lu!

However, this road is by no means easy, when he captured Badong before, Yan Yan had been deployed in the Linjiang area, and later fell into the Fa Zheng plan, so he had to give up Linjiang and return to Jiangzhou, the seat of Ba County.

At the same time, a large part of the defenders who were originally in Linjiang withdrew to the area of Danqu and Xuanhan, which is the barrier to enter Brazil from Padang and across the river and mountains!

If it advances directly, not to mention whether Zhang Lu is willing to enter the Chu army directly, more importantly, if Yan Yan has to intercept it, it will be difficult to break through due to the terrain.

Therefore, Zhao Yun once again accepted Fa Zheng's opinion, first Chen soldiers Jiangzhou, made a decisive battle in Jiangzhou, and led the defenders of Xuanhan and Danqu over, and then secretly attacked Tongluo Mountain......

However, in this way, limited by the terrain and the need for concealment, not only the cavalry and heavy armor could not make the trip, but also the baggage could not carry too much, which was quite a backwater.

Zhao Yun also made sure that the battle had started at Yangping Pass, so that Hanzhong would not welcome him at that time, so he got up and set out his troops.

On the other hand, the sailors of the three divisions that were making a big splash in Jiangling also mobilized the true qi warships that had been "hidden" in Yunmengze for a long time after getting the news, and traced the Han River upstream!

Prepare to pass through Xiangyang and Wudang, and go directly to Hanzhong by water.

The real qi warships here are all suitable for warships in the rivers, and they are much smaller than the warships at sea, and many of them are flat-bottomed sand ships.

Unlike previous experimental wheels, the outer or inner wheels are no longer relied on, but the propellers are installed at the stern of the bed......

Thrust is generated by the rotation of the leaf-shaped paddles.

In the recent history of another world, the emergence of propellers can be described as twists and turns.

At the beginning of the 19th century, people could consider a better way to promote deconstruction than the paddle wheel, and the initial hope was for the "screw", that is, the deconstruction of a screw similar to a gigantic one.

However, during the experiment, due to an accident, the screw was broken, and it was found that after the long screw became a short screw, the speed increased, so the improvement direction of the screw became shorter and shorter, and finally ...... It was found that the screw propulsion device composed of simple paddles instead of the structure of the "rod" was abandoned, which was more effective!

Although it was already the nineteenth century, when "science" was in vogue, the propeller gradually replaced the paddle wheel in this intuitive groping, and the analysis of the principle and the more complete and accurate calculation were all things that were in the future.

Of course, the propeller is not completely better than the paddle wheel from the beginning, and the paddle wheel is more efficient at lower speeds, and only when the speed is increased, the propeller becomes more effective, that is...... There are prerequisites for the efficiency of the steam engine.

In addition, from the material of the propeller to the bearing, casting, and even after the application of the propeller, the seismic requirements for the hull are also technical difficulties.

Fortunately, the information in the hard disk in this regard is relatively complete, although because it is all "paper needs", there is no too professional data and experimental records, but since there is a principle and direction, after absorbing and experimenting in the Ministry of Engineering, it has been simply manufactured, which is suitable for the propeller structure of the existing gas engine, which greatly improves the efficiency of the air engine.

That's right......

From the beginning, Sun Ce's goal was ...... Or "the goal of the Chu State", it is not Badong County, not Xichuan!

It's the real focus - Hanzhong!

After the completion of the Hanshui weir, all sections of the Hanshui River already have the foundation for boating, and after the use of the true qi boat, even if it is a boat the size of a river warship, there is no need for a slender man at all, and it can go all the way upriver in the roar of the true qi machine.

……

At the same time, Zhang Wei was in Yangping Pass, although he was not exhausted, but his ghost pawns had already broken seventy or eighty percent.

He was originally a cultivator who cultivated spiritual power, although he also had a hard body, but he was able to be promoted to Jin Yu because of his status in the Heavenly Master Army, under one person, and some secret techniques in the Heavenly Master Dao.

Fortunately, Zhang Wei is a cultivator, even if the frontal combat strength is unbearable, but some life-saving means have allowed him to survive under Ma Chao.

Half a month ago, Ma Chao began to lead the army to attack Yangping Pass, and there was no strategy and conspiracy, it was just a pure collision, and as a result, Zhang Wei came to Zhang Wei on the first day.

It wasn't until Ma Chao's Shenwei mode was dragged over that he finally entered the normal battle of guarding the pass......

The Qiang people were not afraid of death, causing heavy casualties on both sides.

Fortunately, Zhang Wei still has a "ghost pawn", and even more fortunately, even if he is a god general, he can not enter the "divine power mode" at any time.

Although it will not be weak, after the Kamui mode is over, you will have to rest for at least a few days before you can enter Kamui mode again.

When the god fights with the golden jade battle armor, he is still stronger than the ordinary golden jade, but like the golden jade general, he will be suppressed by the power of the people on the city wall and the invisible force field of the soldiers in the military array, causing limited damage......

In this case, Ma Chao did not dare to enter the enemy formation.

In the fifteen days, except for two days when the Xiliang army did not attack when it rained heavily, the other thirteen days were tackling key problems every day, and Ma Chao "transformed" three times, and it was these three times that caused great casualties and morale bruises to the defenders of Yangping Pass.

If it weren't for the people of Hanzhong, most of whom believed in the way of the Heavenly Master, so as a source of soldiers, when fighting for the way of the Heavenly Master, there was a great bonus in morale and resistance to pressure, I am afraid that the army would have been defeated because of low morale.

Even so, now Zhang Wei's ghost pawns are about to be exhausted, and Ma Chao ...... You can enter Kamui mode again right away!

Zhang Wei felt that without ghost pawns, he might not be able to survive this wave simply by relying on ordinary soldiers......