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?? The hot air expands to the point where the ground crew unfastens the balloon and secures the burner and gondola at the same time.

The pilot puts on a helmet and goggles, wears a canvas flight suit, enters the gondola, and the man pulling the hot air balloon lets go at the same time, and the hot air balloon will slowly rise.

The pilot retracted the other end of the rope used to pull the balloon and put it in the gondola and tied the slipknot to secure it.

Then throw sandbags to the ground one by one to increase the weight to prevent the hot air balloon from rising too fast, and whether to throw it all is determined by visual inspection according to the load of the hot air balloon.

There are also regulations on the flight altitude to increase safety, and it must not be higher than 30 zhang. It is relatively easy to land, and when preparing for landing, the knob of the burner is adjusted smaller, and even the flame can be extinguished, and the air inside the hot air balloon gradually cools and naturally descends slowly.

When approaching the ground, the pilot unties the rope that holds the hot air balloon and throws it to the person on the ground, and everyone pulls it and gets it done.

There are too many uncertainties in such a hot air balloon flight, and the altitude is mainly determined by the experience accumulated by the pilot's test flight, and the speed cannot be controlled, which depends on the wind speed.

When to take off, first of all, it depends on God's face, it must be a sunny day, no wind, too strong and not good, and the wind direction is not right.

The reason why Huang Sheng used this scientific research achievement was to enter Jinzhou to learn about the military situation and to know whether Jinzhou could still hold on. Of course, some people fell from the sky into the besieged Jinzhou, and there is no doubt that the morale of the garrison soldiers and civilians was greatly boosted.

When the barbarians besieging the city outside saw that the Ming army had such a thing, what would be the expressions on their faces one by one? Besides, when they pass over the head of Jiannu, the pilot will bring them a little surprise.

Maintain an altitude of 30 zhang and fly over the Jiannu control area safely, although Jiannu has artillery, but not anti-aircraft guns, arquebuses, and rifles and bows can't reach the hot air balloon in the sky.

It is now the beginning of November, the weather in Liaodong is freezing, there are Mongolian Tartars outside Jinzhou City, and there are more than 200,000 soldiers and civilians in Jiannu.

Therefore, it is necessary to adopt a method of slow progress, and it is imperative to "fight a dumb battle".

The red gang has been operating outside Jinzhou for half a year, the camp is solid, the fortifications should be more solid now, those earthen walls have become ice walls as long as they are watered, and the firmness is comparable to the city.

If Huang Sheng approached with a large army, first of all, the troops would not have an advantage, and secondly, the ground would be frozen three feet and could not complete the fortifications in a short time, and the Tartar and Jiannu cavalry would rush to attack, and the Ming army would probably not be able to stand.

Without a reliable position, it is inevitable that the battlefield will be built by the enemy, and when the forces are in absolute adversity.

The Huang scouts had already reconnoitred all the feasible military routes from Ningyuan to Jinzhou, paying special attention to the exploration of the coastal area closest to Jinzhou, and found that there were several obstacles built by the Later Jin army.

Red Gang is worthy of being a strategist, he is also a clever tactic, and he learned to do impeccable war in war.

Baxiao fought with Huang Sheng, thinking that the Dajin Army was the first to fear Huang Sheng's artillery fire, and the second was afraid of the Huang family's armored combat vehicles.

The slave chief is very smart and pragmatic, and has carried out small projects in the places within a radius of twenty miles from Jinzhou that can be quickly approached by thousands of troops, and specially waited for Huang Sheng to come to fight for a duel, and Jiannu wanted to take revenge.

There is no flat open land outside Jinzhou City, and even the wheat fields after the autumn harvest have been dug into ditches and ditches by the Houjin army, and the four-wheeled carriage cannot walk at all, and it is a big joke to want to gallop.

And the cavalry rush was almost unaffected, and those ditches could be jumped over.

This is the arrangement of the Red Gangsters according to local conditions, giving full play to the cavalry advantages of the Houjin Army, and curbing the mobility of the Ming army's chariots to the greatest extent.

The Red Gangsters found that the lethality of using the earthen wall to curb the artillery fire was good, so they piled up all the soil taken from digging ditches and ditches into a breast wall, and now they are poured with water and frozen tightly, and the firmness is comparable to that of a rammed earth wall.

Baxiao thought that these arrangements would make the Ming army's artillery power sharply reduced by eighty, and the bumps on the ground made it impossible for their chariots to approach smoothly, and the Jurchen and Mongol cavalry attacked violently regardless of losses, and the result of the first battle was that Huang Sheng, who liked to fight in person, was very likely.

It can be seen that the slave chief already knew that Huang Sheng was coming, and he was ready, and revenge was under the city of Jinzhou.

Indeed, the Red Gangster had long learned that Huang Sheng had been appointed as the Duke of the Southern Kingdom, and Liaodong Jingluo led 50,000 soldiers and horses to rescue Jinzhou.

His espionage work almost covered the north of the Yellow River, and those Shanxi merchants who traded with Houjin would inform Houjin of the intelligence of the Ming Dynasty, not only military intelligence, but also the appointment and dismissal of officials.

The Red Gangster also sent many spies to mingle with the caravans of Shanxi merchants, and even some border army generals were bribed and became scum who stepped on two ships.

When the enemy is ready and waiting for him, will he be stupid and run headlong.

Huang Shengcai doesn't do such stupid things, and in the absence of his own time and place, of course he will not go to the battlefield decisive battle arranged by the slave chieftain as he wishes.

The fortifications built by the Later Jin army with great labor can be described as impregnable in the cold winter of Shujiu, but those fortifications that look decent in winter are not worth mentioning until the ice and snow melt and the spring flowers bloom.

Therefore, Huang Sheng planned to use the winter months to train the troops, train the tens of thousands of Ming troops to be strong, and train them to have the strength to fight, so that the red gangsters were stupid and waited in the ice and snow.

Because he was worried that the Ming army stationed in Jinzhou would not hold out until the spring, he took the risk of sending people to Jinzhou to liaison.

This move should be a milestone in military terms, and the participation of the air force in its original state will be recorded in the annals of history.

Zhao Shimin also brought a thousand new military sapper shovels, and Huang Sheng specially took a few to look at, although the quality is slightly inferior to the sapper shovels of later generations, which is unique in this era.

The sapper shovel produced by the Huang family is designed to be foldable, easy to carry, can be folded once, and the handle is changed to a triangular streamline according to the principle of mechanics, which is made of good quenched high-carbon steel, which increases the strength, wear resistance, corrosion resistance, and high temperature resistance.

The sapper shovel has the functions of a shovel, pickaxe, crowbar, saw, and knife. A warrior wielding a sapper shovel can easily cut through Kennu's sword.

Huang Sheng asked Zhao Shimin to produce at full capacity, and later became the standard equipment of the engineering army and auxiliary troops.

Since the head of the family returned to Liaodong Bay with the main force of the navy, there is no need to worry about the defense of Huangjiawan Island and "Huaxia Island", Ma Wu's Qian Zong is enough to garrison "Huaxia Island", and Han Guang's Qian Zong under his direct leadership participated in the battle, and this time he came with Zhao Shimin.

At the end of May, after receiving the order of the head of the family to expand the army, Wu Qiang, Gu Yicang, Wang Zhigui, Liu Shifu, and Lu Zhongming, who were promoted to the rank of Qianzong, all completed the grouping as quickly as possible, and now they are all fully manned.

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