"It's snowing so hard today, it looks like there won't be any troops going to Yumen Pass today." At the east gate of Wuwei City, a soldier guarding the city gate looked at the snowflakes boiling outside the city gate and couldn't help but sigh.

Since the Western Expedition, a large number of soldiers and grain and grass have passed through Wuwei, and the previously peaceful Wuwei City has been broken, and the entire Wuwei has become extremely busy because of the Western Expedition to Gaochang.

Recently, the road has been closed by heavy snow, and with such a heavy snowfall, there is no trace of birds and beasts, let alone people, so that Wuwei City, which has been busy for many days, has finally returned to tranquility.

"This is natural, such a big snowfall, I'm afraid it has been rare in recent years, even horses are extremely difficult to walk, plus the weather is so cold, even iron men can't afford it!" The companion nodded and said, this ghost weather, everyone in Wuwei City is hiding in the house to keep out the cold, if they don't have military affairs, how can they not suffer here.

"Fortunately, there is a military coat, so it will not be as cold as in previous years." The gatekeeper patted his military coat, this is the most popular military coat this year, extremely cold, this year's gatekeeper task is with this treasure, so it will not be so difficult.

"Yes!" The companion wrapped his military coat, thought about the cold of the previous year, and nodded with palpitations.

The sky was getting dark, and it was about to get dark, so the gatekeeper looked at the snowflakes in the sky and kept falling, frowned, and said: "It's getting late, it's impossible for any more troops to come, let's close the city gate!" ”

The gatekeeper turned around, but his companion remained motionless, his eyes fixed on the end of the snowy road.

"What's wrong?" The gatekeeper said in surprise.

"There's a carriage coming!" The companion was surprised.

The gatekeeper suddenly turned around, and at the end of the snowy road, a sixteen-seater carriage came by stepping on the snow, and behind him two snow dragons lined up in two columns.

Soon, the sixteen-ride carriage had already run to the gate of Wuwei City, followed by the second and third sixteen-ride carriages with strange shapes, and I saw that the snow road, which was originally difficult in front of everyone's eyes, turned into a snow field only a few fingers thick, which was enough for people and horses to pass without hindrance.

"It's amazing!"

"In this way, even if it snows heavily, the army can still move forward as usual."

The two gatekeepers exclaimed.

Sure enough, behind the three wagons, an army covered in snow came by stepping through the snow, and the strangest of this army was all wearing strangely shaped hats, covering their heads, ears, and most of their faces, no wonder they could march in such a snowy weather.

"Dare to ask, but General Su is escorting grain and grass!" The gatekeeper looked at the huge inscription in front of the carriage and asked respectfully.

Since the western expedition to Gaochang, Su Dingfang's power has gradually spread on the Longhai line, and its escort of grain and grass has never been lost, and it is extremely fast, and has been recognized by everyone.

"The firearms supervisor led the army to come, and asked Wuwei City to receive it." Xue Rengui stepped forward and said loudly.

"Firearms Supervisor!"

"Mo Jiazi!"

"It's Mo!" Suddenly, a hearty voice came.

"New Year's greetings!"

The two guards saluted in surprise. If there is someone on the Longhai Line who is more famous than Su Dingfang, then Mo Jiazi must be one of them.

The name of the Mo family is naturally well known, not to mention that the brick road under their feet was pioneered by Mohou, and it is said that Su Dingfang's method of transporting grain benefited from Mohou's guidance.

Today, the two of them once again saw the magic of the Mo family, and they actually came by attacking the snow with a chariot.

"Get up, you can be loyal to your duties in heavy snow, and you can be regarded as a dutiful person." Merton nodded in approval.

"Thank you Mohou for your appreciation." The two gatekeepers couldn't help but be overjoyed, they could be praised by the Mo family, and they would definitely become their bragging capital in the future.

Wuwei City is an important town, the past soldiers rest here, there has long been a camp to receive soldiers, firearms can not be more than 1,000 people, naturally it can be easily placed.

After the two soldiers at the gate verified that the firearms superintendent's waist plate was correct, only the soldiers led the firearms superintendent to set up camp.

After the firearms supervisor left, soon, the news of Mo Jiazi's snow attack immediately spread throughout Wuwei City, and many people braved the snow to watch the brick road, and saw the extremely smooth snow road between the three snow ridges on the left and right, and couldn't help but be amazed.

The night was full of cold winds and snow, and when it was dawn the next day, the wind and snow finally stopped, and the outside of the camp was covered with a thick layer of snow, and even the snow road opened by chariots yesterday had been completely covered.

"The snow has stopped!"

The entire firearms warden cheered, the snow stopped, and they finally didn't have to brave the snow anymore, although the Mohou hat and gloves were enough to keep them out of the cold, but the snow made them suffer.

Inside the tent, Merton heard the news that the wind and snow had stopped, and he couldn't help but show a hint of joy.

"Lord Samurai, something is wrong." Xue Rengui came in a hurry and said with a solemn face.

Merton frowned and asked, "What's wrong?" ”

"My lord, although the wind and snow have stopped now, the weather is colder, and the snow on the official road has frozen. The snowplow could no longer walk. Xue Rengui said with a bitter face.

Merton's heart sank and he said, "The snow is frozen. ”

"I wanted to let the snowplow go first, but I didn't expect it but couldn't push it at all." Xue Rengui shook his head and said, although the wind and snow yesterday were very large, the snow was extremely soft, and the sixteen-horse-drawn snowplows opened smoothly.

Now that the snow is freezing, even sixteen horse-drawn snowplows have had little effect, and their speed is extremely slow.

Merton walked outside the tent, and suddenly a cold air hit his face, and he didn't care at all, he went directly to the brick road, reached out and touched the snow on the ground, and sure enough, it was no longer loose, and it took a little force to break it up.

This bit of strength is naturally nothing to a person, but with so much snow on the official road superimposed little by little, even sixteen horses quickly ran out of energy, and they couldn't go far at all.

"Lord Sacrificial Wine, why don't we set up camp in Wuwei City now, and then set off when the snow melts." Xue Rengui said helplessly.

Now that the roads are covered with heavy snow, the weather is very cold, and the snow is freezing again, it has become extremely difficult to attack the snow with cars, and it is simply not enough for the army to pass.

Merton pointed to the dirt official roads on both sides of the brick road and shook his head: "Absolutely not, do you know that there are not many brick roads left after Wuwei, once the snow melts, the official road will definitely become muddy at that time, and the march will be even more severe than now." ”

Xue Rengui's heart sank suddenly, he only thought that the heavy snow was frozen and difficult to walk, but he didn't take into account that when the snow melted, the firearms supervisor was afraid that he would face a more severe test, the brick road from Lanzhou to Yumen Pass was only half built, and it didn't take long after Wuwei to run out of brick roads, and the firearms supervisor had a lot of baggage, and on the muddy road, I am afraid it would be even more difficult to walk.

"In this way, I am afraid that the firearms superintendent will not be able to escape this crime of default." Xue Rengui said solemnly.

Merton suddenly stood up and said: "The firearms supervisor naturally can't bear the crime of missing the deadline, and there will definitely be a way." ”

"The lowly will gather the horses to rotate and open the road, even if the snow is hard, the lowly will open the road." Xue Rengui said helplessly.

"There's no need, since it's useless to attack the snow with chariots, even if it is forcibly opened, it will be useless, and it won't go far at all." Merton shook his head.

"You can't go, you can't go." Xue Rengui was as anxious as an ant in a hot pot.

At this moment, the sixteen-ride chariot that was opening the road in front of him suddenly came with an exclamation, only to see that the original heavy snow made the chariot built in a hurry no longer bear the load, and the wooden planks were directly loosened and broken.

"Young master, the villain is incompetent, and the young master has been disappointed." Zhang Mu came to Merton with a broken plank and said dejectedly.

Merton took the wooden plank and looked at the iron nails on it, and suddenly said in his heart: "Do you know why the iron nails can be easily driven into the wooden planks?" ”

"That's because the nails are sharp!" Zhang Mu replied.

Morton showed a smile and said: "Yes, that's because the iron nails are very sharp, if this snow is compared to a wooden plank, and our legs are iron nails, naturally we can easily sink into it, but what if?" ”

Merton threw the wooden plank in his hand flat on the snow, and then jumped and stepped on the wooden plank, only to see that under the action of the wooden plank, even if he bore the weight of Merton's body, it only sank slightly, and it was completely supported and no longer sagging.

"What's going on?" Xue Rengui was puzzled.

"This is the force studied by the Mohists, the smaller the contact point between an object and other items, the greater the pressure and easy penetration, and the larger the contact area, the smaller the pressure and not easy to penetrate." Merton explained.

After Merton finished speaking, he found that there was silence, and when he looked back, he saw that everyone was confused, and suddenly understood that he was playing the piano to the cow, and he couldn't help but laugh angrily: "This is the same reason why we want to sharpen our swords." ”

"Oh!" This time, all the firearms supervisors suddenly came to their senses.

"I know that it's okay to cut bones with a freshly sharpened knife, but it's difficult to cut meat with a blunt knife." Xue Rengui looked like he was empowered.

Merton said helplessly: "One reason, this time the sudden cold weather makes the ice and snow solidify, which increases the hardness, but also increases the carrying capacity. All we had to do was replace the wheels with wide planks under the carriage so that the carriage would not get bogged down in the snow. ”

Zhang Mu was dumbfounded and said, "The carriage has no wheels, so how can it run?" ”

Xue Rengui suddenly looked at Zhang Mu with contempt and said: "Zhang Mu, you are really an elm head, in winter, haven't you ever played on the ice in the river, it is extremely slippery, one person does not waste too much strength to pull several people, and this snowy land, isn't it just a thick layer of ice?" ”

Zhang Mu suddenly realized and said excitedly: "Yes, we can also polish the bottom of the plank, which is smoother and more labor-saving." ”

"You can also lift the ends of the plank, but you can put the snow in front of you under the car and prevent the snow and ice in front of you from clogging up."

The more Zhang Mu talked, the more excited he became, and the more inspiration he had.

"Great, this time we're going to have a horse-drawn sleigh." Xue Rengui laughed loudly, but he didn't know that what he said happened to be the name of the sled.

The other firearms supervisors were also proud, and their hearts were full of admiration for Lord Sacrificial Wine, as if nothing in the world could stump him.