After a battle with Tang Jin, Tang Xu unsurprisingly announced a retreat. Tang Jin didn't care, he just ordered his soldiers to strengthen their vigilance and didn't care about it anymore, as for whether he could break through this time, it was not something that Tang Jin could decide, it mainly depended on personal chance.

And Tang Jin began to discuss the matter of waving the army due north after dealing with Tang Yun's affairs. Since it is said that Tang Yun has mentioned it by the way, it is impossible for you to say that Tang Jin did not kill him psychologically, but firstly, Tang Jin has already passed the time when he needs to kill people, and secondly, he has already abolished a Tang Gou in front, if he kills another one, it is impossible to guarantee whether Tang Yu will turn his face with him.

After weighing the pros and cons, Tang Jin finally decided to send the goods back to the capital, and the follow-up matters would be handed over to Tang Yu. At the same time, Tang Jin also hinted in his letter to Tang Yu that he wanted to completely grounding Tang Yun, if Tang Yu complied, it would not be a problem to let this guy go, but if Tang Yu did not comply, or let Tang Yun go against himself, Tang Jin didn't mind letting Dali Temple secretly kill this guy. Although there is a high probability that he will tear his face with Tang Yu in that way, in order to prevent being stabbed in the future, Tang Jin does not mind.

Tang Yun's matter is a trivial matter, and for Tang Jin now, the real big thing is to attack the defensive line in the north. Compared with the northeast defense line, although the overall strength is much weaker, even many tribes are still in a nomadic state, and the strength is weak. However, its depth is much deeper than that of the northeastern defense line, which puts forward strict requirements for the need for troops and later supplies.

There is no doubt that the expansion of the army is necessary. Of course, this is also the simplest, mastering the five tribes of the entire northeast defense line, you can pull out an army of 200,000 in minutes.

However, the number of troops is good, but the logistics supply is a problem. Grain and grass are okay, the military food of the Tang Dynasty and the food of the Khan Meng tribe are enough to use, even if there is no perfect supply line, relying on the rations brought by the army itself, Tang Jin can last for five or six days.

But the supply of weapons and ammunition is a problem. Fighting a war in Tang Jin's way, it is simply smashing with money, washing the ground with shells at every turn, in the northeast defense line, it is good to say, Khanmeng's ammunition can still be supplied, but once it enters the north defense

line, especially after penetrating deeply, the replenishment of ammunition can be difficult.

"What happened to the military vehicles I ordered to be produced?" Tang Jin frowned.

Feng Gu on the side took over the other party's task when Tang Xu was in retreat, and hurriedly said: "According to Khanmeng's side, in order to supply the demand for ammunition, the production speed of military vehicles is a little slow, and so far only ten have been produced on the original basis. ”

"So there's only thirty for now, right?" Tang Jin touched his chin and frowned. The number of military vehicles was much smaller than he had imagined, and this number might have secured ammunition supply at first, but it was not possible once he had penetrated the defense line due north.

"The point is, once the fight begins, the whole Khan basically has nothing to produce except ammunition. Pointing to the fact that at that time, it was basically impossible to increase the number of military vehicles. Tang Jin muttered to himself, and for a while he couldn't think of any good way.

In fact, the best thing to do now is to wait until the number of military vehicles reaches a certain level to ensure the stability of the entire logistics supply line before sending troops.

But it's a pity that Tang Jin can't wait now, if it weren't for the logistics problem that stopped him, Tang Jin would have set off with his troops a long time ago.

As for the reason, it is, of course, because of those few national pillars that are not worry-free. I obviously sent them a bunch of powerful firearms, and said that they could use them casually and didn't need to care about the ammunition.

As a result, they quarreled for several days over the distribution of firearms, and after finally distributing them, they each pulled the firearms back to their own barracks, and they had no intention of using them on the front line at all, and the entire front line was still deadlocked with each other as before. And just yesterday, a city was lost, and what was even more infuriating was that the national pillar responsible for guarding that city didn't even do a decent defense after discovering that there was a tendency to rout, and turned around and ran away. That is, Tang Jin is not here, otherwise he would have to smoke this bastard to death!

A gap in the northwest defense line was broken, and while the capital was in danger, Tang Jin was even more anxious, even if he won the barbarian race if he continued to do so, but his lair was stolen, so what a fart? Swap bases? You should play the game!

So, Tang Jin now

I was in a great hurry to rush to the northwest defense line, not to destroy those barbarians, but to at least bring back the lost city to ensure the stability of the entire defense line.

"Forget it...... Let's do it first, take it one step at a time. ”

The situation is urgent, and Tang Jin has nothing to do about it, so he can only say that he will try to make Khan Meng build as many military vehicles as possible to ensure logistics supplies, and he must lead his troops to set off, otherwise it will be really too late.

"If only there were airplanes......"

In such an era, if he had an airplane, Tang Jin basically had nothing to fear anymore. Having mastered air supremacy, and directly dropping a wave of missiles, everything is false.

"Unfortunately, building airplanes is not something that can be learned by talking, and the training of pilots is not overnight. Besides, even if an airplane can be built, how much time will it take to build an airport? Wouldn't it have been enough to have this time for the production of military vehicles yourself? Tang Jin complained to himself.

Wait!

Tang Jin suddenly thought of something, airplanes are not easy to build, gyroplanes can! Moreover, compared to airplanes, gyroplanes are more suitable for windy weather in the north, and even this windy weather is good for its flight.

In addition, the piloting of the gyroplane is very simple, with the guidance of professionals, it only takes two or three days to learn, and if you have a big heart, you can go to the sky in one day. And this thing is not inferior to ordinary helicopters in terms of load, you only need to increase the volume, and you can definitely do an air attack or drop supplies or something.

"Gotcha! That's it! ”

Tang Jin immediately found a pen and paper and designed the gyroplane according to the knowledge in his mind. With the release of drawings one by one, the appearance of aircraft here has become inevitable.

A few days later, the Khan Meng tribe told Tang Jin that the things were ready. Tang Jin immediately rushed to Khanmeng non-stop and saw the rotorcraft that had been produced.

From the appearance alone, there is basically no difference between his rotorcraft and a helicopter, but there is a fundamental difference between the two. However, Tang Jin was not in the mood to explain to others, but went directly into the cabin.

(To be continued)