And Guo Jia, who is in Xuchang, is also thinking about this problem at this time.

After Guo Jia was resurrected, the first news he heard was that the famous Coats in Nanyang, Wollongong, and Mr. Wolong had come out of the mountain.

After Guo Jia heard the news, he sneered and said: Kong Ming deceived me to death, before I dare to go out of the mountain, I must have a duel with him.

Within a few days, Zhuge Liang received a letter from Guo Jia.

The letter said: Mr. Kong Ming, I heard that you are no longer farming in Wollongong, Nanyang, and you ran out to make a big fuss in the world, what? Isn't it true that the wind and rain are good and the harvest in the fields is not good? Besides, Liu Bei is a liar, saying that he is a relative of the emperor, wool, what kind of relative is Liu Bei, and how many people in the world have the surname Liu? Could it be that those surnamed Liu are all related to Liu Bang, the ancestor of the Han Dynasty? You are simply a gang of robbers, pretending to be in the name of the relatives of Liu Bang, the ancestor of the Han Dynasty, in order to take the land of the Han world, and brazenly saying that you are for the revival of the Han Dynasty, do you want to be faced? I, the Duke of Wei, Cao Gong, tried my best to assist Emperor Xian of the Han Dynasty, and I only dared to be the prime minister, you and others are all bandits, and you dare to seek personal interests in the name of reviving the Han world, it is really shameful.

After Zhuge Liang read the letter written by Guo Jia to him, he threw it directly in the fire, and then also wrote a letter to Guo Jia.

The general content is: My lord Uncle Liu Huang is the blood of the orthodox royal family, just because he is unwilling to be an official in this vein, so as to stay away from the court, my lord Uncle Liu Huang is unwilling to fight for fame with others, and the court of the past dynasties has been in turmoil, all because of too many relatives and competing for power with each other. Your lord Cao Cao is just a child adopted by a eunuch, and then he was taken pity by the Han Dynasty and gave your lord Cao Cao a livelihood, Cao Cao did not feel favored, but coerced the Son of Heaven to order the princes, bullying the lord to gain power, the people of the world, who can not know which one does not know? You still licked a cheeky face to come to me, saying that I was farming in Wollongong, and you have been incognito in the mountains for a few years, don't think I don't know, how many young girls you have harmed in the mountain village, and then you left to know, followed Cao Cao, and became rich and expensive.

The two exchanged letters back and forth, and started a psychological war.

This matter was unfortunately known by Sima Yi, Sima Yi has been hidden for a long time, since Guo Jia's death, especially after the Battle of Chibi, Cao Cao began to gradually reuse Sima Yi, and Sima Yi was promoted step by step.

If Guo Jia is not dead, Kong Ming will not come out, then in the same way, Guo Jia will not die, and it will be difficult for Sima Yi to come out.

As soon as Guo Jia came out, Sima Yi was also worried for a while at first, but later he observed that Guo Jia and Zhuge Liang were playing a letter game, so he was relieved.

Because, in this case, Sima Yi can just sit on the mountain and watch the tiger fight, sit and watch Guo Jia and Kong Ming fight, and the province has to go to Zhuge Liang with all his might, and wait until they are both defeated, and then they will exert their strength, killing two birds with one stone, this is the benefit of sitting on the mountain and watching the tiger fight, and guarding the fisherman!

When Guo Jia and Zhuge Liang were playing against each other, I had been back to Jishi Mountain for a while.

The temperature in Jishi Mountain is also very low, but the indoor temperature is not low, which is all the credit of Sangyu, it can be said that Sangyu has let the heating into the home, and the laboratory, factory, and those houses are now heated.

Chen Qi helped us make the first batch of mechanical parts, which looked to be machine-made, and Gou Er had already used these parts to assemble a diesel engine, and the rubber collected by Hanzhong and Nanzhong Menghou had been transported to the foot of Jishi Mountain and made into belts.

The diesel engine is ignited by compressed air, you can get it with a crank, the oil is slightly thicker, if you want to shake the diesel engine easily, you need to boil a pot of water, add boiling water to the water tank, and the temperature at the beginning makes the oil thinner, so that it is easy to use the crank to turn the wheel to compress the air to ignite the diesel.

Dog Er and Bazi Hu shook the shaker, and the big flywheel on one side rotated rapidly, and then Dog Er and Yi loosened the valve spring, and the diesel engine started with a snap.

Success, we named the diesel engine Chen Qi's generation of diesel engine, this thing is not a rare thing at all in Thirty Mile Town, but here, although the drawings and structure are painted by me and Gou Er, and the working principle of the diesel engine is also mastered by us, but the manufacture of these parts can completely rely on Chen Qi's craftsman spirit, so we give Chen Qi the credit for the invention of the diesel engine.

The birth of the first generation of diesel engines, let us carnival for a whole day, Meng Chi in addition to treating people's injuries, all day hunting in the mountains, this day he baked a robe, we gathered around the fire, while eating and chatting.

After that, the diesel engine was installed by the dog two on a carriage composed of four wheels of wood and steel, this car actually did not have a directional rotation system, if you want to let the car change direction, it also needs two or three people to complete, but the relative carriage and the trolley to transport things has been greatly beyond the scope of the ancients' transportation capacity.

After the car was loaded, I asked a few soldiers to put a few bags of grain on it, and then Dog II started the diesel engine, the diesel engine provided the perfect hole for the car, and then the car quickly moved forward, and when encountering a steep slope, the diesel engine could easily drive the car uphill.

Perfect, the next thing you just need to look at is the steering system, with rubber wheels.

I remember that my family used to have a walk-behind tractor, the steering principle of the walk-behind tractor is very simple, I drew a complete walk-behind tractor construction on the drawings, including the rear bucket of the tractor, are iron rods, no wood structure at all, so that the load-bearing capacity of the bucket is greatly improved.

I found that the steering principle of a walk-behind tractor is very simple, basically similar to the steering principle of a bicycle.

I drew two kinds of structural drawings, one is the structure of a four-wheeled tractor, and the other is a three-wheeler, and the steering problem of the three wheels is better solved.

After the painting was finished, I handed it over to Gou Er and Chen Qi, and Gou Er better solved the steering problem according to the automobile mechanical technology he had been exposed to since he was a child.

Dog two family poor, when he was young, the old dog repair car lack of helpers, will call the dog two help, the dog two is also born to repair the car material, get started quickly, after getting the drawings, after improvement, a few days will be part of the tractor parts have been made.

Tire bearings, important components of the steering system, I-plates, and bow plates should be mounted on the body to alleviate bumps.

Chen Qi was responsible for the production of parts in the steel factory, and soon produced the parts needed by Gou Er according to the requirements of Gou Er's drawings, and Gou Er assembled diesel engines in the assembly workshop all day long.

A month later, an improvised tractor was built.

Dog 2 drove a tractor, and a group of people were sitting on the tractor, and the tractor was emitting black smoke and bursting into the field.

Due to the successful production of tractors, our productivity has taken another step forward, the application of diesel engines is too wide, can drive vehicles for transportation, can generate electricity, can provide kinetic energy for the production workshop.

We all know that a magnet can generate electricity by cutting the magnetic inductance line, so we made a simple generator out of copper wire, and then sent out electricity through the drive of the diesel engine.

Sangyu also made an electric light bulb, so that the lighting system of the laboratory and the factory was also generated.

Diesel engines are also used in the military factories of Bazihu, the emergence of motors has greatly accelerated our production speed, most of the parts of firearms need to be grinded, with motors, the speed of running-in machinery is faster.

All industrial production is inseparable from Sangyu's physical and chemical laboratory.

Gou Er and Chen Qi teamed up and successfully copied several tractors to and from the open-pit coal mine and the foot of Jishi Mountain to transport coal here.

After a while, ten brand-new tractors pulled diesel, coal and other resources to Hanzhong, and a mechanic trained by Gou Er led the tractor team.

The mechanic came back and said that when Zhuge Liang saw the tractor, he was amazed, saying that it was almost impossible to build this kind of vehicle without horses.

Gou Er said that he also wanted to hurry up and get a gasoline engine so that the car could run faster, and he bragged that he would be able to make a gasoline car in less than a month. I said let's wait and see.