Li Guodong's small team passed Lanzhou Wei and entered the plateau along the Yellow River Valley. Along the way, the terrain gradually increased and the climate became colder and colder. The dry scene in Shaanxi gradually disappeared, and snowy snow fields appeared in front of them.

The cold wind blows on people's faces like a knife cut.

Li Guodong and his elite Yewuguan each wore a woolen sweater made from the sand backdrop, and a big red battle robe on the outside, and an iron armor on the outside. Li Guodong himself was a fish scale armor and a phoenix-wing helmet; Han Dashan was wearing a mountain mansion armor and an eight-petal steep iron helmet, and the rest of the soldiers were chain mail and an eight-petal steep iron helmet. Li Guodong's fish scale armor was wearing a white fur cloak, and this precious cloak was stolen from the Fan family. Han Dashan's mountain mansion armor was wearing a light yellow fur cloak, which was also expensive. Other Yewuguan's armor was wearing a black goose-cloak cloak, which was a cold-proof clothing produced by Li Guodong and Jiangnan Fushe's weaving workshop joint stock.

The down cloak and down coat were both inventions by Li Guodong. The most exquisite down jacket is a mink down cloak. It uses swan down cloak. The inner lining is expensive fine silk, the outer layer is mink, and the middle is swan down cloak. This kind of clothes are extremely warm when worn on the body, and can withstand the wet and coldness of winter in the south. It is promoted in the Jiangnan area and is very popular among the gentry of Jiangnan. This most expensive down jacket can bring huge profits to Li Guodong every year.

The lower-grade down jacket is a goose down cloak, which uses the goose down of a big white goose as a filler, the inner lining is fine silk, and the outer layer is also silk; the most common down jacket is a duck down cloak, which is filled with duck down, and the inner lining is silk, and the outer layer is made of better cotton cloth.

The invention of down jackets solved the problem of keeping warm. These down cloaks and down coats were very popular all over the country.

The reason why people have not considered using down to make clothes in the past is that the smell is difficult to remove. Li Guodong invented a method to remove the smell of activated charcoal. He soaked the collected down first, washed, and then dried, placed it in a sealed wooden cabinet. A wooden box filled with activated charcoal is placed in the cabinet. The wooden box is hollowed out and air can enter and exit the wooden box.

The manufacturing method of activated carbon is very simple. First, charcoal is produced, and then activated with water vapor at high temperatures. The production process is a bit rough, but it is enough.

The first down jacket was produced in Shabeigou. After Li Guodong taught Wang Quan this method, it was promoted in the Jiangnan area. However, there was no external rumor to remove the taste of down, only Wang Quan's Touthu City can handle it, which firmly grasps the core secrets.

The animal-powered textile machine invented by Li Guodong has been promoted in Jiangnan, and the textile efficiency of each worker has been increased by eight times.

In fact, weavers in Jiangnan are many times more wealthy than craftsmen in the north. A weavers' annual income can reach seventy taels of silver. They can not only marry a good wife, but also afford a maid.

Just an ordinary weaver is so rich. With Li Guodong's current economic strength, if he leaves nothing, goes to Jiangnan for a few years first, and then fles to Japan to be a rich man, he can not only live a rich life by himself, but also become rich in his descendants, and maybe he can also establish a super group company in Nanyang in the future. But that is not his personality, and he cannot ignore China.

Since we have come to this era, we must prevent China from entering the darkest and most barbaric era.

The small team followed the river valley to Xiningwei, which was the westernmost that the Ming Dynasty could really control on the Qinghai-Tibet Plateau. Further west was the territory of the Mongolians.

Xining Wei, the later Qinghai Provincial Government, is now a weizhou city. The walls of Xining are five meters high, and the height is even higher than those of the world's strong cities such as Xiangyang, Wuchang, and Nanjing. From the west gate of Xining Wei, there is the vast Qinghai grassland.

The guards at the door saw a group of cavalry in exquisite armor. Each of them rode an expensive Wuzhumuqin horse, wearing thick and beautiful cloaks, and the leader was even wearing excellent fish scale armor and phoenix winged helmets. The defenders all looked envious. But they still stopped Li Guodong and his group very competently.

Li Guodong showed his waist sign and a document with the seal of Governor Xuanda. The soldiers did not dare to neglect them. They hurriedly saluted and put Li Guodong and others over.

This place was still in Shaanxi Province at that time. Lin Dan Khan, who had fled to the West Sea before, had come to Xining Guard to command the Ming army to resist the Mongolian soldiers who were attacking the border.

There is also a tea and horse sect in Xining Acropolis, which is the Xining Tea and Horse sect. All Han people who come out of the customs with tea, grain, iron and other items must go through the inspection of the Tea and Horse sect and need tea and horse sect to enter the foreign countries for trade.

The Mongols who were active in Qinghai raised expensive Hequ horses. Those horses were one of the best war horses. The tall Hequ horse sprinted far faster than Mongolian horses. It was a kind of horse suitable for heavy cavalry equipment. Many Han merchants carried tea, salt and grain from Xiningwei to leave the pass, traded with the Mongolians, and exchanged for Hequ horses. They could be sold at a high price when they returned to the pass.

The Wuzhumuqin horses riding by Li Guodong and others are even more top-notch than the Hequ horses. The Wuzhumuqin horse is not only tall and has fast sprinting speed, but also has the endurance of Mongolian horses. It is an excellent war horse used by the elite Jurchen cavalry and Bayala soldiers.

A Ming cavalry soldier who recognized the horse looked at the war horses under Li Guodong and the others enviously, turned to his companions and said, "Where did these Ming cavalry, and so many Wuzhumuqin horses come from?"

"They came from Xuan Da, and they should have all killed Jiannu and stolen him." Another Ming soldier said.

"Oh my God, so many Wuzhumuqin horses, how many Jiannu have to be killed?"

"Looking at their murderous faces, everyone is a burly man and a hero!"

"Six hundred Wuzhumuqin horses are really elite!"

"Looking at their equipment, that armor is the real armor! And their weapons, how beautiful!"

"But what kind of armor we have? Many people don't even have armor! The Tea Horses have collected so much money, so why are they doing!"

"They should have all been stolen from Jiannu! If you have the ability, you can snatch them from Jiannu!"
Chapter completed!