Zhu Zhen took a closer look at the ice cart on the shore and saw that they drove the ice bed in a variety of ways, either by simply pushing and pulling by manpower, or by dragging with a rope.

He saw someone put one end of the rope on the front post of the bed, and the other end on the shoulder, and with a little force, the ice bed was like a fly. After the speed came up, the driver took advantage of the situation to sit at the front of the car and skate on the ice for a while to save energy.

You can even use a wooden stick to prop it up like a boat. At one end of the wooden staff, there is an iron spear tip, an iron hook, and a nice name is 'Ling Gun'".

I saw that the handlebar type first hooked the ice bed full of sandbags with an iron hook, pulled forward a section hard, and when the ice bed slipped faster and faster, he jumped on it, stood at the back of the ice bed, and used the tip of the gun to prop the ice forward. You don't need to exert much effort, and the dragonfly will continue to pestle the ice, and the ice bed will always be able to move forward at a high speed.

And the handlebar type can also control the direction with a gun and turn flexibly, which is really the same as holding a boat.

"That's a good idea! It's a winter car, and it's much faster than a car!" Zhu Di also understood what Lao Liu meant, and praised from the side: "This ice surface is hard and flat, and it is fast and labor-saving to transport things on the ice bed. In the past few years in Beiping, I have seen that the common people use this thing to transport goods and pull people every winter, and they have been using it until the ice melts in the spring."

"Hmm." Zhu Zhen nodded, each of those sacks contained a hundred catties of sand, and he saw that there were ten bags piled up on the larger ice bed, which could still be opened steadily and without much effort.

"Is this thing hard to learn? How long does it take for a newbie to hit the road?" Zhu Zhen asked again.

The fourth child pulled him off the ice and said with a smile, "Didn't you say that practice brings true knowledge, and struggle is long-lasting? If you go down and learn it yourself, you'll find out."

'Xiong Da' asked people to get an ice car over, and he personally taught 'Xiong Er' in the middle of the lake to prop up the ice bed.

It took him almost an hour, and he was basically able to control this ice car the size of a single bed, of course, like the fourth brother, he could stop, drift, and cross obstacles on the ice, which was not something that could be practiced overnight.

When he returned to the shore, Zhu Zhen asked the handlebar, "Is this thing difficult to make?"

I saw him standing at the back of the ice bed for a while, and the ice bed snorted and rushed forward. The wind whistled past the sideburns, and the speed was similar to that of a horse, but it was very steady.

Zhu Zhen experienced it himself, and it is indeed not difficult. At the beginning, he couldn't grasp the direction of his power, the ice bed didn't go in a straight line, and his speed couldn't be fast. But that is, he touched the doorway, operated freely, and the speed came up.

"I see you've got copper under this horizontal log." He touched the bottom of the horizontal wood, the yellow metal skin that was wrapping.

Zhu Zhen squatted down and carefully observed the ice car, and saw that the two long logs that were in contact with the ice surface were like the legs of a sleigh. The principle of action is similar to that of a sled, which is actually an ice sled.

"What's so hard about that?" The handlebar replied with a smile, "Actually, it's just a wooden plank, with two rows of short legs at the bottom and two long wooden feet at the bottom of the short legs. He is a carpenter who can make several cars a day."

But it's just a matter of shipping, and you don't need so many fancy techniques.

"Ugh...... Okay." Zhu Zhen has actually been itchy for a long time, but he has the burden of idols, and he is afraid that if he doesn't slip well, he will damage his image. But in front of the fourth brother, he was still a younger brother, so he half-pushed and half-pushed.

It's just a straight line, and you have to learn another way to turn and brake.

"This is a thing from the General's Mansion, of course it needs to be more exquisite." The handlebar hurriedly explained, "But its practical iron and animal skin, the effect is the same. Even if you don't cover anything, as long as you polish the crosswood to a smooth point, it will be just as slippery."

"Okay." Zhu Zhen nodded happily, stood up and pointed to the handlebar style and said, "Look at the reward."

Ma Sanbao took out a golden bean and threw it to the handlebar.

The handlebar style smiled when he boarded, holding the golden beans in both hands, kowtowing and thanking him.

~~

On that day, there was not only one handlebar type, but all the handlebar styles received the ten taels of silver promised by the six princes. And it only took an hour to complete the hundred laps he requested.

Zhu Zhen asked people to measure it, and it was exactly one mile around the lake, that is, in one hour, the distance traveled by the ice bed was one hundred miles.

This is not the speed of the ice bed, because one is fully loaded, and the other is that many ice beds travel together, which inevitably hinders each other, and the frequent turns are almost impossible to speed up, which also greatly affects the speed of the ice bed.

But for Zhu Zhen, such an achievement is meaningful, because it simulates the state of the ice car team when it travels collectively on the winding river to the greatest extent. Of course, there won't be so many bends in the river, but there are many more ice trucks, so the speed should be much the same as that inside and out.

However, after running the lap, the state of the handlebar type is very different, those who rely on manpower to push and pull the ice car, obviously tired and unable to lift their legs, can not lift their hands, and those who use the Ling gun to control the ice bed are in much better condition. One by one, they are not panting, their faces are not red, and they can obviously continue to slide.

So Zhu Zhen let them continue to slide...... Of course, the six princes will not let them contribute in vain, this is another reward.

The purpose, of course, was to test the endurance of the coachman. As a result, until dark, none of them shouted tired, and they all said that if they could see the road clearly, they could slide all night.

"There's nothing to brag about." Zhu Di told Zhu Zhen: "The handlebar style here in Peking is slid from morning to night, and when it is busy, it even slides while eating, because it doesn't take much effort at all."

"Good!" Zhu Zhen nodded happily, endurance is actually more important than short-term high speed.

~~

After dinner, the two brothers plunged into Xu Da's study again, and while secretly drinking the wine hidden by the old man, they continued to discuss with great interest.

"To be on the safe side, you should only drive during daylight hours. The days are short this season, but there are still five hours of dawn. Excluding the eating and rest in the middle, as well as all kinds of emergencies on the road, let's count him walking for four hours a day, that's four hundred miles!" Zhu Zhen said in a deep voice.

"That's a hat." Zhu Di was dumbfounded while snorting the neck of the saltwater duck: "Normal baggage transportation is twenty or thirty miles a day, and you are ten or twenty times the speed!" The 2,000-mile road from Nanjing to Beiping will take you to get there in five days."

"But it is estimated that tens of thousands of ice trucks are crammed together, and they will definitely not reach this speed." Zhu Zhen said in a deep voice, "But I estimate that half the speed should be there."

"That's ten days!" Zhu Di was so happy that he couldn't close his mouth and said, "What do I say, there is no problem that you can't solve."

"Fourth brother, don't be too optimistic, don't forget that we can't use ice beds all the time." Zhu Zhen reminded him.

"That's right." Zhu Di patted his head and said, "The Yangtze River doesn't freeze."

"Generally speaking, connect the Huai River and the Qinling Mountains with a line." Zhu Zhen drew a red line on the map and said in a deep voice: "The south is normally not frozen, but the north is frozen."

"So, after crossing the Huai River, can you use the ice car?" Zhu Di touched his chin and looked at the map.

"Not yet, the ice has to be thick enough, so you have to continue north, and it's almost the same as entering Shandong normally." Zhu Zhen said slowly: "But this year is extremely cold, maybe it can be further south, the matter is big, we have to send someone to investigate on the spot."

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