As soon as Wu Yan finished speaking, he saw a young general standing up on the other side angrily and questioning: "Burn? Why are we burning? We can't even get into the valley and want to burn someone's food and grass. Are you dreaming?"

The young man is named Zhou Wang. His father Zhou Xing is also a veteran in Daming. He used to play under Lan Yu, but now he has retired because of his old age. However, he is also Song Sheng's old boss, so he sent his youngest son Zhou Wang to Song Sheng to play. Of course, he also hopes that his old brother will help raise his son.

Zhou Wang was not old and didn't like studying. His father wanted to send him to martial arts, but he was unwilling to go there. Instead, he went directly into the army. With his courage, he made a lot of contributions. In addition to Song Sheng's training, he is now also serving as the commander of the guard, two levels higher than Wu Yan.

In fact, Zhou Wang’s question was also what others wanted to ask. After all, they can’t even catch the entrance to the valley now, let alone burning the grain and grass in the valley.

However, Wu Yan was not angry, but smiled confidently and said, "If you want to enter the valley, you don't have to build the entrance to the valley. We can completely fly over from the sky!"

"Hot balloon!" As soon as Wu Yan said, someone shouted in surprise. After the hot balloon was created by Li Jie, the army was equipped. However, the hot balloons in the army are mainly used to detect enemy situations and are rarely used in actual combat. After all, the hot balloons are not easy to control in the air, and accidents may cause casualties.

"Yes, there are hot balloons. Maybe this method doesn't work elsewhere, but in this situation, it can work miraculously!" Song Sheng was excited to slap his thigh when he heard Wu Yan's words.

It is not practical to burn the enemy's food and grass with hot balloons. Because the city is large, it is difficult to find the location for storing grain, and the food and grass can also be stored separately. In addition, the granaries in the city are made of bricks and stones, so if you are prepared, it is difficult to ignite.

But it is different now. Harrier's cavalry were trapped in the valley, with limited area inside, and the location where the food and grass was stored was easy to find, and it was impossible for them to build houses in the valley, so the food and grass were piled up together and were easily discovered from the sky.

The most important thing is that according to the instructions of those prisoners of war, although there is water in the valley, it can only be used for drinking by the army. If the fire broke out in a military camp, it may not even be enough water for firefighting.

The other generals and officials reacted at this time and immediately praised Wu Yan. Even Zhou Wang, who was dissatisfied with the past, had to admit that Wu Yan, who was learned from martial arts, was indeed smart and knew about hot steam balloons, but he had never thought of using hot steam balloons to attack the grain and grass in the valley.

"Wu Yan, please immediately concentrate the hot balloons in the army, bring tinea oil and other items, and be ready to take off the sky and burn the grain and grass in the valley at any time!" Song Sheng immediately ordered that this method was thought out by Wu Yan, and of course he would also have to implement it. After all, if it could really burn the grain and grass in the valley, it would be a great achievement.

"The last general will take the order!" Wu Yan also stood up and clasped his fists, then took the military order and prepared.

Song Sheng issued several more orders and made changes to some arrangements in the army. After all, if the food and grass in the valley are burned down, it is not that they will enter the valley, but that Haril in the valley will fight out of the valley to escape, and then the offense and defense will be transferred, so he must prepare early.

Using a hot balloon to raid is not an easy task. The most important thing is to wait for the weather. Because it is winter now and it is at the foot of the Tianshan Mountains, the wind is relatively strong, and when the wind is too strong, the hot balloon cannot fly up at all. There is also a problem with the wind direction. So Wu Yan was ready and patiently waited for the arrival of the weather.

As a result, I waited for half a month, mainly because the wind was too strong on Tianshan Mountain. Even if the wind was right sometimes, it was difficult for the hot steam balloon to fly. If I forced myself to fly, a tragedy of hitting the mountain might occur, so they could only wait patiently.

That morning, the wind suddenly became much smaller, and the sky was clear, and the wind direction also blew from outside the valley to inside the valley, which shocked the top leaders of the Ming army. Without Song Sheng's instructions, Wu Yan had already started to inflate the hot balloon. When Song Sheng and the others arrived, the hot balloon was already suspended in the air. As long as the cable was untied, it could be taken off immediately.

"Please give orders by the general!" Wu Yan stood in the hanging basket of a hot balloon and saluted Song Sheng below. As the main general of this operation, he naturally had to personally board the hot balloon to command the battle.

"Be careful, go!" Song Sheng nodded to the soldiers on the hot balloon, and then ordered in a deep voice.

With Song Sheng's order, soldiers immediately untied the cables of the hot steam balloons, and then twenty hot steam balloons slowly took off. This is also all the hot steam balloons that can be found in the army. Each hot steam balloon has three soldiers, and the hanging basket is filled with tinder oil, grenades and other fire-induced objects.

Twenty hot steam balloons took off and slowly floated into the valley with the wind direction. Although the entrance to the valley is very small, the space above the entrance is very large. In addition, the hot steam balloons flew very high, so they floated smoothly above the valley.

Wu Yan graduated from martial arts, so of course he also learned how to control over hot balloons. In fact, when he was taking the hot balloon class, he got full marks, so now he did not drag him down after taking the hot balloons, but he was very familiar with commanding the two soldiers to make various preparations.

Harrier in the valley did not find hot balloons in the sky. After all, few people would look up and pay attention to the situation in the sky, but soon they would feel the fear from the sky.

After Wu Yan threw down a ignited tinder oil tank with his own hands, other hot balloons also threw tinder oil and grenades downwards. The grenades are all specially made, not only with greater power, but also with longer leads to avoid explosions before landing.

"Boom~" loud noises rang out in Harrier's military camp, with flames and explosions everywhere. Harrier, who was originally lying in the tent to rest, jumped up all of a sudden. Before he could get out of the tent, a grenade happened to fall outside the tent, blowing a big hole in the entire tent. A fragment passed through Harrier's forehead, and blood suddenly surged out.
Chapter completed!