Follow the prince to have meat to eat, this is what Cui Ran summed up in the past few days, after a steam engine was bought, it was praised and all the expenses were reimbursed, not to mention that his status in the family has also been greatly improved.

As for the usefulness of the steam engine, Cui Ran used Li Chengqian's suggestion to connect a press to press bricks.

After a few years of recuperation, the people of Datang basically have some spare money in their hands, and the plan to build a house has begun to be put on the agenda.

So since you want to build a house, you naturally need masonry and cement, so it is almost impossible to know whether a machine that can press masonry will generate a lot of profits.

Besides, even if the people don't buy it, the government will buy it, the Western Regions and Mobei are now constantly building cities, and the bricks and stones needed are simply unreasonable, and if this piece can be packed, it will be a lot of money.

Therefore, buying a steam engine to press bricks is almost a lucrative business, especially since the Wang family still has shares in the carboniferous mine in Shanxi, which virtually reduces the cost again, and it is not impossible for a steam engine to spend a year to earn back.

After calmly analyzing all the problems, Cui Ran threw himself to the ground with the five bodies that Li Chengqian almost admired, and felt that it seemed that it was not bad to follow this young master, at least after being cheated by him, there would be benefits.

Another point is that the young master has been looking at the family unpleasantly, always thinking about completely leveling the five surnames and seven hopes, Lao Cui is very worried that if he continues to follow the family and fight against Li Chengqian, will he become the first bird to be killed by that young master.

Out of the idea of protecting himself, Comrade Xiao Cui believes that the best choice is to continue to mix with Li Chengqian, anyway, it is impossible for that young master to be a bare-bones commander, and he always needs people under his hands, as long as he Cui Ran and his family are dissociated, he will not be able to climb up at all.

As for the identity of the family, Cui Ran didn't think that his identity as a side branch would get any support, but it was more likely to be sacrificed at a critical time.

In short, no matter what, Cui Ran thinks that it seems more promising to follow a certain prince, and no matter whether His Royal Highness likes him or not, he has always had a good relationship before, and as long as he follows the prince with all his heart in the future, it is estimated that there should not be much of a problem.

Chang'an City because of a steam engine up to the emperor and down to the family, all felt that they had taken advantage of it, and all of them had a happy ending, while Li Chengqian in Liaodong was engaged in his small inventions.

"How? Did you get it done? Seeing Jing Yuchen laboriously fixing the two steel crossbows on the control frame in front of the glider, Li Chengqian stepped forward and asked.

"It should be almost, but I don't know if there will be any hidden dangers in operating on it." Jing Yuchen replied calmly, the entire Feifeng Army, his flying skills are the best, so the experiment for a while naturally fell on his head.

"Be careful and do what you can!" Li Chengqian gave a word, then walked to the side, quietly waiting for Jing Yuchen to take off on the glider.

With the action of dropping gunpowder packets in the last flight, Li Chengqian's mind was opened, and he firmly believed that if the steel crossbow was moved to the glider, it would definitely be able to improve its deterrent power again.

Thinking that the glider flying in the air suddenly swooped down, and the two triangular arrows flew down from mid-air with the momentum of the dive, taking away the fragile lives of the enemy generals, Li Chengqian felt that the steel crossbow had to be installed on the glider, even if it took a lot of effort.

It is with this idea that today's experiment was born.

Run, accelerate, take off, Jing Yuchen, who has flown countless times, completed the take-off process in a very short time, adjusted the direction slightly in mid-air, and controlled the glider to fly towards Anshi City not far away.

"The Tang people are here again, they are here again!" After a few days of calm, the Goguryeo people once again saw the Tang Heavenly Soldiers that made them fearful, although there was only one one, but it still made them sincerely afraid.

No one can forget the scene of hundreds of Great Tang Heavenly Soldiers covering the sky a few days ago, and no one can forget the blazing flames that erupted from the packages dropped by those Great Tang Heavenly Soldiers.

"What's the panic, he's only one person, and he can't come down, what's so scary." A guy similar to the Datang school guard whipped the slightly flustered soldier with the whip in his hand, raised his head and waved his fist at Jing Yuchen defiantly, as if to say that if there is a kind of you, you will come down and beat Lao Tzu.

Donkey day guy, Lao Tzu is worried that he can't find a target for the experiment, and you actually sent it to the door yourself. Jing Yuchen, who was in mid-air, was wondering if he could find a random target to test and then fly back as soon as possible, but the Goguryeo officer's fist landed right in his eyes.

Counting nine cold days, although he was wearing a lot of clothes on his body, Jing Yuchen still felt very cold, and because of the biting cold wind blowing on his face, it was like cutting meat with a knife.

So approaching the sky above Anshi City, he plunged headlong into the surprised gaze of the Goguryeo officer, and at the same time adjusted his direction slightly, and pulled the triggers of the two crossbows at hand.

"Bang bang" two 'soft sounds', two triangular arrows with the double assistance of bowstring and gravity, with two afterimages diagonally shot out, and then Yuchen's legs moved slightly, pulling the flaps of the glider, changing the attitude from a swooping to ascending, and rising into the sky again before reaching the range of Goguryeo archers.

It was only at this time that he had time to look at the chaos caused by one of his mansion rushes below. However, it is a pity that the Goguryeo officer was not hit by the crossbow arrow, but two personal soldiers fell beside him, causing a certain amount of confusion.

Damn it, that's a big life! Jing Yuchen muttered in his heart, trying to hang the strings of the two steel crossbows in his hand again, and then turn around and give that guy another hard blow.

But after giving it a try, Jing Yuchen gave up on the idea.

Flying in mid-air, it is difficult for him to maintain his balance in mid-air at the same time, and then complete the action of shaking the ratchet, even if the thing is labor-saving, it is standing on the ground and shaking with both hands, in the case of mid-air, it is impossible to complete this action.

In desperation, Jing Yuchen looked at the Goguryeo officer who had been hiding in the crowd below and spat fiercely, adjusted his direction and turned to leave, leaving Anshicheng behind who was in a commotion.

However, although he did not shoot the Goguryeo officer, he proved with practical actions that it was indeed feasible to carry a steel crossbow into the sky, even if it could not be hung in the sky, it could be hung on the ground and then lifted into the air. And if you practice it again in the future, when you can generally master the tricks, such an air attack method is equivalent to giving the Feifeng Army another set of defense and attack means.

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