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Han Qian left Zhao Laoqi, Zhao Qi, and Chen Jitang outside, and he took Yang Qin, Feng Xuan and others back to the official residence.

These pottery urns and retort pots are all newly designed and fired by Han Qian, mainly for distillation and purification after brewing, but the effect is not very good, and Han Qian has never had time to figure out what is going on.

At that time, the spirits that burned the throat of later generations could not be brewed.

Han Qian used to mainly use quicklime to dehydrate and purify the liquor brewed in the world, but after purification, the wine dissolves a certain amount of lime water, which is bitter in the mouth, and it is definitely not a fine wine, but it is only sold as ordinary burnt knife wine.

It's a pity that the burnt knives that don't have the taste can't be sold into the eunuchs' homes, and the ordinary people can't afford the high price of wine, so it's better than nothing.

Even if the knife wine is used for disinfection, it is extremely irritating to the wound.

Han Qian considered using distillation to purify the liquor very early, and tried to produce a new type of retort in the autumn of last year, but he failed to further ponder and adjust the design of the new retort, and the Jingxiang War broke out subsequently, and the matter has been delayed.

At present, the daily affairs of Jinyun Tower and Zuo Si, Han Qian are handed over to Tian Cheng, Gao Shao, Lin Haizheng, and Zheng Tong to preside, whether it is to avoid the suspicion of Emperor Tianyou, or to sort out the situation in Jinling City, he needs to cultivate himself for a period of time, and he will have more time to ponder these strange and obscene skills.

Real high-purity alcohol, in addition to being very popular with the eunuchs and magnates, is also of high value for medical and medicinal purposes; The corresponding distillation and purification method will also be more widely used.

After the pottery urn and retort pot were placed in the East Cross Courtyard, Han Qian couldn't wait to personally lead several young craftsmen of the Han family to assemble them......

In the next few days, Han Qian rode into the city every morning, went to the county king's mansion to answer the mao, sorted out the affairs of Jinyun Tower, chatted with the three princes, and rode out of the city after lunch, returning to Yandangji to ponder the distillation.

Yang Qin, Feng Xuan, and Xi Chang took the fleet and the only remaining 300 cakes of gold in Han Qian's hands to Runzhou and Guangling, where there has been a great abundance of grain in recent years, to buy rice and grain.

In the Jingxiang War, not only the Jingxiang area was disabled, but the neighboring Jiang'e and other places were requisitioned millions of stone of grain and a large number of people, plus before the autumn and winter, 30,000 households were requisitioned from Jiang'e, Tanxiang and other places to fill in the real border of Dengzhou and Junzhou, and the entire western territory of Great Chu was greatly affected.

At present, there is news that the Yangtze River, Yuanshui, Xiangshui, and even Ganjiang River basins will have very heavy rainfall after the beginning of summer, and the flood disaster will not be light, and the shortage of grain will be the general trend.

In any case, transporting grain from Runyang and other places to the west will not be a loss-making business.

However, the Xuzhou fleet currently has only eight large ships, and the total capacity is only 15,600 stones, and Han Qian did not let Yang Qin and Feng Xuan take all the ships away, and left a new type of fast sailing ship in Yanyanji, and Lin Zongjing led more than 30 armed guards and sailors to traffic materials in Jinling and other places.

Han Qian really wanted to buy lime, green bricks, briquettes and other materials from Taowuji, and the warehouse was equipped with ships to transport them, but Han Qian had to guard against the situation in Jinling City one day, and he had to have a fast sailing ship that could help him get out of danger quickly.

No matter how short the current capacity of the Xuzhou Boat Gang is, he must keep a ship by his side so that he can call it at any time.

Of course, at the same time as he was developing distilled spirits in Yandangji, he also set out to try out the scorpion cannon that could be placed on the deck of a sailing ship.

Attaching trebuchets to warships was an idea that all the generals of the navy had at the time, after all, everyone wanted to be able to destroy the enemy ship or kill a large number of enemy soldiers from a distance of three or four hundred paces, rather than a brutal and tragic battle between the two sides.

However, the traditional trebuchet is too cumbersome, and at least forty or fifty people need to be dragged at the same time to fire stone projectiles, and even a five-story building ship in the world is far from having such a large deck to put a traditional trebuchet.

The biggest improvement of the whirlwind cannon is to replace the manpower towing with a gondola weighing more than thousands of catties, but even a small whirlwind cannon must be five or six meters high, and the tip rod is nearly ten meters long, which is still too large for the existing warships in the world.

Even if it is forcibly installed on a warship, it will do more harm than good.

The warships of the building ship army and the navy division, the commonly used combat weapons, the clapping rod and hook inlay are mostly used in close combat, and the bed crossbow is mostly used in long-distance combat.

The bed crossbow can shoot short spear-like crossbow arrows, and can penetrate the thick wall of the ship, but it can only attack the enemy ship from the side, and the power is not as good as smashing a stone bullet weighing hundreds of catties or even two or three hundred catties into the enemy ship, let alone setting fire to the enemy ship three or four hundred steps away from the clay pot filled with fire oil.

The traditional scorpion cannon has extremely high requirements for the material of the ribs, and it is difficult to use it repeatedly for many times.

Jinling City was not like the Xichuan City that had been besieged at the beginning, and it was relatively easy for Han Qian to obtain excellent bow materials.

Han Qian thought about combining the traditional three-bow bed crossbow with the tendon bed crossbow, using the bow arm synthesized from three Tuomu giant bows to replace the torsion tendon as a charging mechanism for projectiles.

However, even if it is a bed crossbow made of three Tuomu giant bows, the bow power is only about five or six stones, which is enough to fire giant crossbow arrows, but I think that even if you throw a stone bullet weighing thirty or fifty pounds to three hundred steps away, you need at least eight to ten Tuomu giant bows as a projectile charging mechanism.

As a result, the scorpion cannon is bulky and expensive again.

Han Qian thought about it and decided to use stainless steel to make a crossbow arm.

Even if there were hundreds of steels in the world, the cost was actually higher.

Hundred steelmaking is mainly to heat the pig iron block and carry out repeated forging, gradually remove impurities and decarbonization, and finally forge into steel, but the whole process is extremely complicated.

At the beginning, Han Qian looked at Wen Shengyi, and perhaps thought that forging the pig iron block once after it was burned to a red hot temperature could be called "one refining", but when he really studied the craftsmanship of the world, he found that the pig iron needed to be repeatedly forged for several days or even more than ten days after being heated in the furnace, which showed how difficult it was to smelt a piece of steel to the level of "one refining" in the world.

During the Three Kingdoms, Cao Cao, the king of Wei, ordered Yousi to make five treasure knives, which took up to three years.

Although by this time of the Three Kingdoms, another six or seven hundred years had passed, and the iron-smelting and steel-making technology had developed on the basis of the traditional "hundred steel-making", it was still much more difficult than imagined to cast a stainless steel bow arm that could be used to store power.

A sophisticated straight-ridged steel knife, forged on the basis of crude steel, is enough, and the price will cost thousands of dollars, but the stainless steel bow arm must be greatly deformed without breaking, and it must be elastic enough to accumulate three or four thousand catties of huge force, which is much more demanding than the requirements of forging a sharp steel knife.

Han Qian discussed the relevant plan with the master of the Han family, and everyone smacked their tongues, saying that if they really want to forge a qualified bow arm, they may not be able to forge a qualified steel giant bow in two or three years.

Not to mention the cost of it, is it worth the time?

What if two or three years have passed and it still hasn't worked?

Isn't this money spent in vain?

"Nothing I have planned has been accomplished, so let it go." Han Qian patted the case and said, determined to go his own way to make a steel giant bow.

In the past two years, Han Qian has practiced money and food, like running water, and everyone is used to it.

At this time, seeing that Han Qian had made up his mind and would not allow others to put his beak, and everyone did not say anything anymore, he requisitioned an adobe house where slaves and maids lived on the south side of the West Cross Courtyard, and prepared to start building a refining furnace.

The military workshop has ready-made pig iron and iron ore powder to buy, and there is no need to build a large iron-making furnace on this side of Yandangji.

The hand forging furnace in the world is much simpler than imagined, such as wind whacks, tongs, forging hammers and other steel-making and forging steel tools, can be carried from Taowu set some ready-made over, three days the casting room has been prepared to set up the ignition furnace.

On this morning, Han Qian specially asked Du Yijun and Du Yiming brothers to go to the county king's mansion on his behalf to take leave, he stayed in Yandangji to see the situation of the first day of ignition of the furnace, but he specially slept a lazy night, practiced boxing, and had breakfast in the courtyard slowly, and before he went to the forging room, the county king's mansion sent a guard, and it was rumored that the three princes were going out of the city to Yongchun Palace to inspect the grange.

Han Qian could only put down the others in advance, take a boat to the Grange on the other side of the river, and wait for the three princes to come out of the city.

It is said to be a grange, but it is twelve or thirteen miles deep, and it will also be one of the main sources of private money for the county king's mansion in the future.

Before the grange was given to the name of the county king's mansion, it was the hunting garden of Emperor Tianyou's autumn hunting, and there were not many fields cultivated, but there were nearly 20,000 acres of paddy fields, which were cultivated by more than 900 households and 5,000 or 6,000 officials, slaves and maids.

In addition to harvesting more than 20,000 stone rice every year, the grange also raises more than 2,000 cattle and horses, and can also hand over cattle and sheep, chickens, ducks, poultry meat, poultry eggs, fish and crabs, and charcoal every year.

Take a boat out of Yandangji, go south for about two miles, and then turn into an east-west horizontal river.

The manor of the county king's mansion is located at the mouth of the river, and there is a wooden bridge across the river lane, connecting the official road from the south, and the carriages and horses can gallop directly into the manor.

This manor is the residence of Emperor Tianyou when he goes out of the city to hunt, although it is not built as a righteous and eight-way palace, but it is also a hundred times more magnificent than the Yandang Jizhuang courtyard on the opposite bank.

After Han Qian went ashore, he saw that the outpost of the three princes' guards had just arrived, so he walked into the manor and wandered around.

In the manor of more than 100 acres of size, there are dozens of pavilions and pavilions, there are carved railings and painted walls everywhere, flowers and trees are lush everywhere, and the shallow pond in front of the house and in front of the house is full of koi green lotus.

In addition, there is also a main hall named Yongchun Palace built in the manor, Emperor Tianyou sometimes avoids the office, so he acts in the Yongchun Palace, and everyone is also accustomed to Yongchun Palace as the Zhuang Yuan.

In addition to the main building complex of more than 100 acres, there are also barracks for guards and water barracks for sailors and warships in the east.

In addition to the more than 330 direct family guards accompanying the family office, the county king's mansion will also select 670 loyal and brave soldiers from the soldiers of the Dragon Bird Army to be the guards of the tent palace.

The barracks next to the Yongchun Palace will also be used as the garrison of the guards of the tent in the future.

Under normal circumstances, when the three princes go out of the city, they will use the personal guards of the tent to escort them; The guards of the county prince's mansion and the daily guards of the three princes are mainly rotated by the family office.

In addition to the Yongchun Palace and the barracks, more than 900 slaves and maids are mainly concentrated in the ten slave villages.

If the third prince does not go out of the city, Han Qian will not run to the Yongchun Palace Grange without anything, and this is also the first time he has walked into the Yongchun Palace Manor.

Han Qian climbed a rockery, looked left and right, and saw the north part of the Yongchun Palace Manor, with dense trees and grass, and the rivers and rivers, which were integrated with the Qiupu River in the west and the Yangtze River in the north.

To the south of Yokogawa Port, there are mulberry fields and paddy fields, and ten slave villages are also mainly distributed in the south of Yokogawa Port.

In order to increase its income, Yongchun Miyagrange still needs to reclaim more than 30,000 acres of land north of Yokogawa Port.

However, a hundred years ago, this land may have been a river beach, and even then it was still low and silted, and at this time it looks like a dense forest of water and grass, but if you really want to cultivate grain, the flood disaster will be very serious.