Because the rubber tires have been replaced, and the speed of the vehicle has increased, the wear of the axle has accelerated, so the frequency of axle replacement has also increased.

Gao Junshan immediately realized that because there were no bearings, if the wheels were fitted with bearings, the wear of the axles would be greatly reduced.

The bearing is a component that fixes and reduces the load friction coefficient in the process of mechanical transmission, which can also be explained in this way: the bearing is a part used to reduce the friction coefficient in the process of power transmission and keep the center position of the shaft fixed when other parts move relative to each other on the shaft.

Gao Junshan is not omnipotent, he doesn't know anything about the production process of bearings, but he knows that there is a component of bearings, as long as he can know that there is such a component, and then make some simple descriptions to his Chongwen disciples, he believes that his Chongwen disciples will be able to imitate the world's bearings.

Because in the current factory, many products are made by his students through Gao Junshan's description.

There are many such products in factories, some are production tools, some are daily necessities, and more are military products.

For example, the steel helmet was made in a factory under the description of Gao Junshan.

His students adored him, saying that he had a prescient and was a god.

As for the students' comments, he doesn't deny or affirm them, anyway, the more mysterious the better.

Mysterious things are more likely to be worshipped by the common people.

This year's Jinling is particularly hot, into August, Jinling is more like a stove, at night, the people are afraid to sleep at home, every family has moved out of the mat, bamboo bed, in the yard or on the street overnight.

The imperial palace in Jinling is no exception, and the heat is unbearably hot.

As soon as he returned to the palace, the two concubines gave him a great surprise, and during the time he was busy with the conquest of Burma, he had three more daughters.

Dong Xiaowan gave birth to a pair of twin daughters for him, and Liu Rushi also added a little princess to him.

Now Gao Junshan can be said to be full of children, he already has seven sons and five daughters, plus five adopted sons and one adopted daughter, he has a total of eighteen children.

Because the weather was too hot, Gao Junshan decided to send Dong Xiaowan and Liu Ru back to the capital, especially his three daughters, because of the weather, they cried every day and sent them to the capital, where the climate was definitely much cooler.

Gao Junshan asked Li Hu to be responsible for escorting the two concubines back to Beijing.

"Little Huzi, the two imperial concubines will be handed over to you," Gao Junshan said to Li Hu, "Look at how lovely my three daughters are, you must send me to the capital safely." ”

Li Hu said: "Your Majesty relax, this time I took the 'Xiangyang No. 1' back to Beijing, it is absolutely safe and reliable, plus we are all from the Cao Gang all the way, and I guarantee that the three little princesses and the two imperial concubines will be sent back to the capital safely." ”

Gao Junshan said to Li Hu: "After you return to the capital, I will give you a month's vacation, and you go home to take a good look at your parents." ”

Li Hu is the son of Li Busi, who is now the official of the Ministry of Agriculture and is in charge of agriculture throughout the country.

Li Hu thanked him and said: "Thank you Your Majesty for your care, just because of the complicated affairs of the Cao Gang, I forgive the official for not being able to go home to see my parents." ”

Gao Junshan said: "The affairs of the gang are important, but going home to visit your parents is also a big deal, I won't force you to go home for a long time, but you have to go home!" ”

Li Hu bowed again: "Thank you, Lord Longen!" ”

After sending off the two concubines and the three little princesses, Gao Junshan didn't stay in Jinling for long, and under the escort of Li Derong, he went out of the city to Jinling Shipyard.

The first 8,000-ton giant battleship of the Huaxia Kingdom was born at the Jinling Shipyard.

The purpose of Gao Junshan's trip was to see this behemoth.

The giant ship was named "Zheng He No. 1".

The Zheng He-class giant battleship was designed by Chongwen shipbuilding engineers, and was finalized by Gao Junshan, an epoch-making battleship, although it is still a wooden battleship, because of its huge size, and has an iron armor amulet, and more importantly, it relies on the steam engine as the power, propeller propulsion, and can be the king in front of the sail battleships of this era.

The Zheng He class was an 8,000-ton battleship, a scaled-down version of the historical Zheng He's treasure ship. According to the "National Legend", Zheng He's treasure ships have sixty-two, the largest one is 44 zhang long and 18 zhang wide.

That is, the largest is 148 meters long and 60 meters wide.

The treasure ship has four layers, the nine masts on the ship can hang twelve sails, the anchor weighs several thousand catties, and it takes two or three hundred people to set sail.

The Zheng He-class battleships were reduced to 120 meters long and 40 meters wide.

The appearance is the same as that of the Wuchang-class large battleship, and it is also modeled after the Xiangyang-class battleship, with three decks and two bottom compartments.

Firepower: 70-pounder guns on the foredeck, three; The secondary guns were 50-pounder guns, six; The aft deck guns were nine 50-pounder guns; One hundred and seventy-four gunwales, divided into three decks, three hundred and sixty 32-pounder, fifty-four 18-pounder, eighty-four 9-pounder guns.

The guns on the fore and aft decks were distributed in two tiers. The upper deck of the foredeck is occupied by three main battle guns, and the lower deck is occupied by six secondary guns; The aft deck had five 50-pounder guns on the upper deck and four 50-pounder guns on the lower deck.

The guns on the front and rear decks have special turrets, which can fire at 180 degrees without blind spots.

The Zheng He-class giant battleship had three large chimneys, which were erected in the center of the battleship.

Like the Wuchang-class battleships, the command cabin is located in the front cabin, but the difference is that the commander's rest cabin is also located in the front cabin, while the sailors' rest cabin is still in the rear cabin, so as to avoid the commander returning to the command cabin for too long and delaying the fighters when the battle is about to go.

The damage management team has expanded to 50 people.

There are also five small speedboats on deck, also powered by steam engines, and equipped with hoist cranes to smoothly lower the speedboats into the water.

There were no artillery on board these five small speedboats, the main task of which was search and reconnaissance, and the top speed was also 21 knots.

Unlike the Wuchang-class battleships, the Zhenghe-class battleships had elevators installed between the bottom floor warehouse and the deck, which were specially used to transport ammunition, so that they could continuously supply the artillery with various ammunition.

There is also a special ammunition team in the ammunition warehouse on the ground floor, which is responsible for ammunition management in peacetime and the deployment of various types of ammunition in wartime.

Gao Junshan was satisfied with the firepower of the Zheng He-class, which could easily sink a sail battleship.

The Sail Battleship was an armed ship that served as the main force of combat at sea in the 17th century. The warships of this era were all made of wood, and some were clad in copper below the waterline. The power is the sail, the weapon is the breech-loading gun, which fires round projectiles for destroying the hull, as well as anti-personnel shotguns and chain shells for destroying sails.

Because the power of wind at that time was not enough to cause effective damage to an enemy ship due to the power of a single ship's guns, the battle line (all combat warships lined up in a line) was used for combat, from which the name of the battleship was derived.

Gao Junshan boarded the "Zheng He No. 1" giant battleship that was about to anchor, and the captain of this battleship was the first batch of admirals trained by Chongwen Naval Academy, whose name was Deng Shijie.

Following Gao Junshan to board this giant ship were Sun Dahai, commander of the Ninth Army Corps, Liu Wenxiu, commander of the Fourth Fleet of the Navy, Ma Jin, commander of the Fifth Fleet of the Navy, and Ma Wen, commander of the Sixth Fleet of the Navy.

In addition to these four godsons, there are also Hong Pengju, commander of the Third Fleet of the Navy, and Li Shiqi, commander of the Second Fleet of the Navy.

They are all senior admirals in the Huaxia Navy, and this time they are boarding the ship for internship as students of the senior admirals advanced training course.