After sending Bi Gou away, Zhang Qian immediately put all his thoughts into the improvement of the windmill. ，

He needed to come up with a newly-designed, low-cost version of the windmill shaft complex before Bi Gou left, instead of the current money-burning machines that cost at least three hundred cranes each.

Now this kind of money-burning machine with bronze as the movement and wrought iron as the skeleton is suitable for him, Zhang Ruoxu and Sun Anzu to "try the new" in their respective Zhuangzi, but it is not suitable for Bi Gou to promote it in the land of debasement.

Now this kind of money-burning machine is precise and strong, but it is not something that ordinary people can afford. And according to Zhang Qian's own understanding of Datang, even if it is an ordinary and honest family, it is very difficult to come up with twenty yuan at once. Therefore, it is impossible for anyone to spend their savings for generations to relieve the floods of the whole village!

Therefore, if you want to promote windmills and machine wells, the accuracy can be discounted, the durability can be discounted, and even the performance can be discounted, but the overall cost must be low!

It is best to go down to the ordinary small landlords of Datang to the point where they can afford to buy it by gritting their teeth, so that this thing can be promoted on a large scale! When Bi Gou left Chang'an, he could go without regrets.

"Senior brother, this is too difficult, I want to use it well, and I want to spend less money, how can there be such a good thing in the world?!" Guo Nu didn't understand Zhang Qian's thoughts very much, and poured cold water on him with a grin.

"Senior brother, if you have that time, you might as well think about how we can expand the shares of the Six Gods Firm. At the moment, Wang Yuanbao can't help but ask, and the housekeepers of the Duke of Baoguo, the Duke of Kui and the Duke of Qian are also asking. Ren Cong hopes that he will find another way in a different direction, "As long as the second round of share expansion is over, you will give ten sets of waterwheels and machine wells to Bi seniors for nothing, which is also a trivial matter!" ”

"Don't forget, you two, our Qin Mo is also a branch of the Mo family. The ancestor made all kinds of utensils back then, just to benefit the world! "Zhang Qian has always attached great importance to the ideas of the two junior brothers, however, this time, he chose to be stubborn." If an artifact is made, but ordinary people can't afford to use it, wouldn't we be ashamed of the ancestor?! ”

"As for the second round of stock expansion, dealing with people is not my brother's forte. You two just look at it. Deliberately not looking at Guo Nu and Ren Cong's grinning appearances, after thinking about it, he continued to add, "In the end, as long as we can guarantee that the sum of the capital held by the three of us will not be less than fifty percent of one." The other two of you just let it go. is still the previous sentence, the Six Gods Firm is the foundation of our existence. At this moment, we can participate in more strength, and our future road will be more stable. ”

"Yes! Brother! Guo Nu and Ren Cong didn't have the courage to refuse, so they had to give up their lives.

Seeing that the two of them were empty, Zhang Qian smiled again, and encouraged the two in a low voice, "Don't worry, the development and growth of the business bank can be slowed down a little, and everything is based on stability." Although we are all "green-skinned parrots" at the moment, ordinary officials are afraid to come to the door, and others do not know the true cost of flower dew. It is not for the sake of dozens of profits to interfere with the refining of alcohol! (The green-skinned parrot, the self-deprecating statement of the Tang Dynasty officials of the eighth and ninth grades.) ）

This is a big truth, and it is the main reason why he dares to "waste" most of his energy on the improvement of the "windmill and shaft set".

Right now, although he is only a master of the eighth grade, local officials at the level of county magistrates and county lieutenants no longer have the courage to come to the door again to force him to answer to the problem of using his mouth to buy shares.

The emperor's actions such as giving alcohol the name "gunpowder" and ordering the establishment of a gunpowder department in the ordnance department have to some extent represented the importance that the royal family attached to "gunpowder". Without knowing the true cost of toilet water, the top magnates of Datang would never deliberately give the emperor "eye medicine" for the sake of a small business with a profit of dozens of dollars per month. Although, although the Tang Emperor's sense of existence is extremely low, it is far inferior to his wife, daughter and uncle!

Therefore, taking advantage of this rare period of tranquility, Zhang Qian wanted to do something he liked to do.

Whether it is out of respect for Bi Gou himself, or out of kindness to the people of the Tang Dynasty, it is worth his full effort.

He is just an eight-grade "green parrot", and he is not qualified to participate in court deliberations, nor does he have the strength to intervene in political disputes. However, he can make Bi Gou have more expectations for the future in his heart when he leaves Chang'an.

But he could, with his own ability, let the people of Datang suffer less from floods and eat more corn and sorghum.

In a sense, this is also his return to Datang. After all, the world accepted him Zhang Qian, and let him live a more comfortable life than in the original world. Although, here, he occasionally feels alone.

"Senior brother, then the second senior brother and I will go to Zhang Luo to expand the shares. Alcohol refining matters, you can rest assured. With the two of us here, there must be no problem! But on your own, don't get too tired. Anyway, you are also the master of the eighth grade, and some things can be handed over to the craftsmen below! ”

"Senior brother, senior brother is right. If you don't mind passing on the knowledge of the teacher, and want to make the windmill and the shaft cheaper, why not ask the craftsmen of the Ordnance Supervisor to help? Also, the craftsmen who will be in prison are idle every day. Seeing that our chrysanthemums are white, we are all hungry! ”

Seeing that the expansion of the shares of the Liushen Commercial Bank was already destined to be handed over to himself. Guo Nu and Ren Cong couldn't help but start to give ideas to Zhang Qian again.

The two of them just said casually, however, Zhang Qian's eyes instantly released an aggressive light.

"The craftsman handed over to the Armory? Pull the general as a prison again? yes, why don't you pull them in?! I'm stupid! Put such good conditions, don't take advantage of it! With a slap on the head, he pulled his leg and went straight to the desk. Spread out a roll of mulberry paper, pick up the charcoal, and dance with the dragon and phoenix in your right hand.

The so-called word wakes up the person in the dream, nothing more than that.

Reducing the manufacturing cost of windmills and shafts is a huge challenge for Zhang Qian, and it is no less than developing a new set of machines. However, if you treat this matter as a scientific research project, split the project into several sub-projects, and then bring the craftsmen of the Ordnance Supervisor to work together to tackle the problem, the difficulty will immediately be much reduced!

The armament supervisor of the Tang Dynasty, as well as the general supervisor next door to the armament supervisor, almost gathered the most skilled craftsmen in the entire world. Since ancient times, the skilled craftsmen of the prisons have a tradition of doing private work outside. As long as they can complete the task on time, the four main halls of each prison will not have the heart to find trouble with a group of craftsmen.

With such a group of "national treasure" level craftsmen not needed, they are thinking blindly behind closed doors, isn't they stupid? Compared with later generations, the current Datang military weapons supervisors and skilled craftsmen who will be supervisors have low requirements for wages to the point that they are negligible. A bottle of Liushen flower dew per person, and two jars of chrysanthemum white, are enough for them to forget to sleep and eat!

So, on the first day, after the preliminary split of the "project" in the study, the next day, Zhang Qian rushed to the Ordnance Supervision and Gunpowder Department with a large stack of drawings.

As a result, after the morning of the next day, all the well-known craftsmen in the ordnance prison, and the craftsmen who were more "easy to talk" to the prison next door, all became the targets of Zhang Zhushu's consultation.

As a result, under the joint "tackling" of the Datang Military Weapons Supervisor and the General Supervisor, the research and development work of Zhang's windmill and machine shaft was advanced at a speed visible to the naked eye.

The cost of windmills and shafts has been falling again and again. Looking at the overall cost, it has fallen to about 60 cranes, which is less than one-fifth of the original. If it weren't for Zhang Qian's insistence on the parts of the entire transmission system, they would all be made of metal. The cost can even be doubled to reach the standard of 30 hangs.

"Yongzhao, thank you!" When Zhang Qian personally sent a complete set of design plans and a miniature model of a windmill to Bifu in a horse-drawn carriage, Bi Gou, who had been demoted to Sima Liuzhou, personally opened the main entrance and greeted the distinguished guests.

These days, because he offended Empress Wei and the oblique officials of the whole world, except for a few old friends such as He Zhizhang and Zhang Shuo, the rest of his colleagues and old friends avoided him like a plague. lest if he dodged a little slower, he would be regarded as his accomplice and suffer from the fish in the pond.

And Zhang Qian just listened to a few words of encouragement from him, but he always treated him as an elder. Even remembered to fulfill his promise and gave away the model of the windmill well and the latest drawings before he left Chang'an, how could he not be moved?

It's just that he has now become a "green-skinned parrot", and he can't take anything to repay Zhang Qian's kindness. Therefore, opening the front door to welcome guests is the best way to express gratitude.

This move not only represents his personal composition, but also regards Zhang Qian as a confidant like He Zhizhang. It also represents the attitude of the Tang Dynasty Confucianism to Qin Mo's re-emergence from the mountain.

Of course, the goodwill and deep meaning expressed by these actions will not be declared by Bi Gou. However, in Datang, many things that are not declared can attract people's attention more.

"Xiaoyou, maybe the old man is too anxious, I'm a little sorry for you!" Seeing Zhang Qian's innocent face and eyes, Bi Gou silently apologized in his heart, "But the old man's time is really running out." And you, since you are the pioneer of the Mo family to re-enter the WTO, you shouldn't be unable to bear this pressure! ”