Zhao Yu knew that with the changes in the situation between Song and Mongolia, the wars would become more and more frequent, and the affected places would become more and more, and he would even face several battlefields at the same time, and he could not fight in person as before. Today, the army has undergone many rounds of reorganization and expansion, and middle and senior officers have also been eliminated several times in the course of continuous actual combat and study, and the rest have grown into generals who can take charge of their own affairs. They are familiar with the use and formation of firearms, and are able to independently command campaigns on the scale of corps and divisions.

But what worried Zhao Yu was that after the capture of Jiangnan, only some local battles broke out between the Song and Mongolian sides, which were short-lived, and the scale was mostly small-scale battles at the division and regiment level. Although military-level exercises are held every year to train troops and familiarize himself with the combined command of various arms, he still has no bottom in his heart because he has not experienced actual combat tests.

Today, Zhao Hao suddenly decided to 'steal' horses, not only to solve the worry of lack of war horses, but also to test the actual combat ability of the troops and the level of commanders. Although the 1st Marine Division is under the command of various departments of the Navy, it has always used them as a rapid reaction force, so the Marine Corps is the unit with the highest combat readiness and the fastest response speed among the various armies.

In addition, the Marine Corps, as one of the naval combat forces of the navy, also shoulders the functions of landing operations and seizing important areas, and it can be said that it has the advantages of both the naval and infantry units. This requires them to be familiar with the two combat modes of water and infantry, and the commanders must also have the command ability of the combined services. Today's battle happens to be a joint operation of various arms of the armed forces, and even if the scale is small, it can just test the actual combat command ability.

In addition, from a political point of view, the peace between the Song and Yuan dynasties, even if it was only short-lived, was not in the interests of the Great Song Dynasty. This will not only be a slack among the military and civilians, but will also make some groups feel lucky and have the idea of sitting in a corner. And only a constant war can keep the government and the opposition vigilant, know that the war is not far away, and let them not dare to ignore it.

Now that the goal, purpose and direction of the operation have been clear, Zhao Yu gave Zheng Yi the right to command with full powers, and he and the generals are only spectators, and they will not interfere with their command if there are no extraordinary circumstances, and the result he wants is that he must see the war horse appear on Chongming Island tomorrow, as for the process, and what tactics he uses, he does not ask.

Zheng Yi was suddenly ordered, and the pressure was conceivable, but he also knew that the holy order was difficult to do. After receiving the order, he did not dare to slack off, and immediately summoned his staff to formulate a more detailed battle plan, he knew that the key to this victory and defeat was to be fast, so the number of troops used should not be too much. After several discussions, he decided to organize a marine regiment, a cavalry regiment, a naval transport detachment, and two baggage battalions into a composite brigade.

Time was pressing, and Zheng Yi played it as soon as the battle plan was formulated. Zhao Yu knew that a good battle plan was equivalent to winning most of the battle, and after reviewing it, he issued a military talisman ordering him to mobilize all the armies and start the operation. Zheng Yi did not dare to slack off after receiving the authorization, and immediately ordered the generals to be summoned to announce the edict, issue combat orders, issue tasks, and make pre-war preparations. After dark, all divisions went into combat positions......

The battle to seize the horse has begun, but Zhao Yu has been the shopkeeper this time, and in order to ensure his safety, he returned to the royal ship for the night under the persuasion of the generals. Although he said that he would delegate power, he was still relieved in his heart, and he couldn't sleep if he wanted to, so he went to the deck again. At this time, the lights on the royal ship had already been lit, and the moon in the sky was shining, and the river was also sparkling, and everything was exposed to the moonlight, so it was said that this was not the best time to smuggle out.

However, Zhao Yu is not worried, there are many ways to solve this, the smuggling troops can swim over, they can also send water ghosts to cross the river first to clear the sentry posts, or take advantage of the rising fog of the river as a cover to complete small-scale smuggling. He saw that the island was also busy now, and the baggage battalion in charge of building the bridge quietly transported the necessary supplies to the river bank under the cover of the woods, and could be launched as soon as he received the order.

'Bang, bang, ......bang' At this time, a rhythmic knocking sound attracted Zhao Yu's attention again, and he looked down, it turned out to be a group of sailors on the boat gathered by the river to wash clothes, and the sound was the sound of the mallet hitting the clothes.

In the army, it is required that the military appearance be neat and tidy, and the clothes should naturally be washed frequently. The Sheji is the emperor's ship, and the sailors must pay more attention, but now the weather is hot, that is, they are inactive, and the clothes on their bodies are full of sweat and smell, not to mention that they have to operate the boat and sail, and their bodies are wet and dry, dry and wet, and they can only wash their clothes every day to keep them clean.

But Zhao Yu knows that from ancient times to the present, washing clothes is an inescapable housework. The most beautiful description of laundry is "Shih Tzu Huansha". When the beautiful Xi Shi was in the river, the fish saw her reflection and forgot to swim to the bottom of the river, so Xi Shi has the pronoun of "sinking fish". But the reality was that before the advent of the washing machine, for many it was not as fun as the idyllic depicts,

At present, these sailors use their hands to wash their clothes, using the washing power of the river water and the hitting force of sticks, which shows how time-consuming and laborious manual labor washing is at this time. Hand rubbing, rod hitting, scouring, throwing...... These simple manual labors that are constantly repeated often leave people with the feeling that they are hard and tired.

It is said that the laundry pestle was invented by people who lived near the water for the convenience of laundry, and the washboard was invented by people who lived far from the water. The batter is made of wood and resembles a baseball bat, and uses the power of the batter to bring out the dirt with water. In order to be able to wash cleanly, some cleaning agents are often added.

Modern people know that washing clothes cleanly requires water, agitation, and surfactants. Dust sticks to the fibers and can be rinsed off with water, but to remove the yellow stains from the collar, you need to use surfactant to deal with it. A surfactant is a chemical compound whose composition is made up by molecules that are a bit like tiny magnetic particles. This "magnetic particle" molecule attracts dust at one pole and water at the other. The vacuum-loving pole sucks the oil of the clothes, and the water-loving pole loosens the oil from the cotton fabric and suspends it, and then rubs it vigorously to wash off the dust and oil.

At this time, there were no chemical synthetic agents such as laundry detergent and laundry detergent that were widely used in later generations. However, Zhao Yu knows that there are substitutes in this era, and the most common is plant ash, because the potassium carbonate in plant ash can remove oil stains. In order to make the silk soft and white, the ancients wet the silk silk with plant ash water, put it into the ash made of shell burning, and soak it in water to produce a strong alkali - potassium hydroxide.

Generally, the dirty substances on clothes are mainly oils, and most of the oils belong to oils, and under alkaline conditions, the degree of hydrolysis is intensified, and higher fatty acid salts and glycerol that are easily soluble in water are generated. The main component of plant ash is strong alkali and weak salt, and its aqueous solution is alkaline due to the hydrolysis of carbonate ions. In addition, during this period, in addition to plant ash, people also used animal oil, vegetable oil, soaphorn, and alkali salts to wash clothes. At present, the most popular thing in Lin'an City is 'soap ball', which is made of honey locust powder into orange-sized balls and put into water to foam and remove stains. He thought that the name of soap in later generations might also be inherited from here.

With surfactants such as water and plant ash, people's clothes are much cleaner, but whether they are using a pestle or rubbing by hand, washing clothes is very hard. Is there a labor-saving way to do laundry? Yes. During the voyage, they stuffed the dirty clothes into a cloth bag, tied one end of the rope to the boat, and threw the cloth bag into the sea, and let the water stir and pat the clothes during the voyage, and the clothes were washed.

Thinking of this, Zhao Yu suddenly had an idea, and Westerners were also inspired by the "washing of the sea", and in the seventeenth century, someone invented a washing device, through a device composed of wheels and cylinders to squeeze the flow of water, imitating the effect of washing clothes in the sea. This device is the prototype of modern laundry machinery, so why can't I 'invent' one at the moment to liberate the people of the Great Song Dynasty from this labor?

Once he had this thought in his mind, Zhao Hao couldn't sit still. I don't have anything to do with myself at the moment, and I can't sleep well, so I might as well have a washing machine to play. On a whim, he immediately went to the ship's studio. First of all, try to recall the history of the development of washing machines in the world, so that we can learn from it.

As far as Zhao knows, the first washing machine was born in the United States in the nineteenth century. The main component is a barrel containing a straight shaft with paddle-like blades, which is rotated by a crank to which it is connected by a crank. However, the washing machine was not widely used because it was laborious and damaged the clothes, but it marked the beginning of the use of machine laundry. Later, in Germany, a washing machine with a pestle as a stirrer appeared, and when the pestle was stirred, spring-loaded wooden nails struck the clothes continuously.

By the end of the 19th century, the washing machine had developed into an octagonal laundry tank that rotated with a handle, and when washing clothes, hot soapy water was placed in the tank, and the clothes could be squeezed with water after washing. Later, the Americans invented the wooden hand-cranked washing machine, which is extremely simple in its structure, which is to install six blades in the wooden cylinder, and use the handle and gear transmission to make the clothes turn over in the cylinder, so as to achieve the purpose of laundry.

Later, steam washing machines appeared in the United States, and steam power began to replace manpower, greatly reducing people's manual labor. In France, small, portable, and housewive-friendly steam laundry tubs appeared. Steam washing machines have made a qualitative leap in efficiency compared to hand washing, and steam washing machines are used handily in various steam laundries in the streets and alleys, and laundries are also booming.

Later, water-powered washing machines and internal combustion engine washing machines also appeared. The hydro washing machine is an upgraded version of the "sea laundry" and is located on board. The washing machine is equipped with water inlet and outlet holes, the shell is equipped with a power source, the washing drum is equipped with a clothing inlet hole, and its inlet is equipped with a sealing cover, and the washing machine is connected to the boat through connectors, and only the natural river water power can wash clothes, and it is much cleaner than "sea laundry".

As for the subsequent electric washing machine, it is no longer in Zhao Hao's consideration, and he can design it, but it can only stay on paper, and it cannot be realized under the existing conditions. And in the course of his recollections, several sketches of manual washing machines from various periods have been sketched on paper. After several comparisons, he felt that he was not very satisfied, either because he was too 'backward', or the laundry effect was not good.

"Why am I so stupid?" After thinking for a moment, Zhao Hao suddenly patted his head and muttered. I think about the most advanced thing in my previous life when I was a child was the large-wave double-cylinder washing machine, which was the best design after several improvements, and it was not eliminated until the automatic washing machine was put into use on a large scale.

At present, you don't have to think about timing, water saving and other issues, as long as the mechanical structure is based on the design, and the power is changed to manual operation. Thinking of this, Zhao Yu immediately started to design, after abandoning those messy multi-functions, the main body of the washing machine is a square wooden barrel, plus a large wave wheel, which is simply a piece of cake for him, and can even be made without detailed drawings.

However, Zhao Yu took into account the reality of the situation, and he still separated the laundry bucket from the drying bucket and adopted a split design. The original plan was to adopt a more durable gear transmission structure, but it was also replaced by a belt drive, and the manual drive was changed to a foot drive. This is not only convenient for manufacturing, reducing costs, but also more labor-saving, and is also conducive to promotion.

"Your Majesty, the first regiment of the Marine War has successfully smuggled in. The transport detachment of the naval army also adopted the tactic of directly rushing to the beach, and the cavalry brigade was sent directly to the beachhead, which has already been launched! At this time, Tan Fei came in and said.

"Straight to the beach!" Zhao Yu frowned and said in surprise when he heard this. He was not surprised that the Marines had succeeded in smuggling from the front, but that it was inappropriate to use transport ships directly to the beach to transport the landing force. Not only did this change the battle plan that had been made before, but it was almost impossible for the warship to directly rush to the beach without the help of modern power machinery, and it was almost impossible to return to the sea, which is different from losing a watermelon and picking sesame seeds.

"Your Majesty, is there anything wrong?" Seeing that the little emperor's expression was wrong, Tan Fei was a little nervous and hurriedly asked.

"Oh, nothing. You go and call the ship's craftsmen to wait for me on deck! Zhao Yu pondered for a moment, waved his hand, and commanded again. At this time, he had already figured it out and understood Zheng Yi's intention, which was to take advantage of the characteristics of flat-bottomed sand boats suitable for shoals to directly hit the beach, so that the hull would not be damaged. It can be said that it is not only a very clever way to take advantage of the high tide to get the boats that have seized the beach out of trouble and return to the sea, but it can also be popularized in various departments

"Hurry up and prepare, what are you doing in a daze?" Seeing that Tan Fei was still stunned for unknown reasons, Zhao Yu urged again......