In ancient times, Annan was called Jiaozhi, its land was wild, the miasma was everywhere, the people were fierce, they had always been aggressive, the country was often turbulent, and in order to make a living, they often plundered the border of the Great Song Dynasty.

These Annamite people are a group of repeated villains, on the one hand, they made overtures to the Song Dynasty, let the Song Dynasty open border markets, and gave them rich materials to trade, but on the other hand, they kept making small moves.

As early as the time of Renzong of the Northern Song Dynasty, Nong Zhigao, the leader of the Zhuang nationality in Guangxi, rebelled, conquered most of Guangxi and Guangdong, and even established his own political power, trying to attack Hunan and other places.

Nong Zhigao's father was originally an official of Guangyuan Prefecture, and later Guangyuan Prefecture let Jiaozhi occupy, when Jiaozhi accepted the canonization of the Northern Song Dynasty, and the lord of the country was the king of Jiaozhi County, and the king of this county named Nong Zhigao's father Nong Cunfu as the envoy of Guangyuan Prefecture.

But Jiaozhi was too harsh and fierce to oppress the people, Nong Zhigao rebelled, and after Jiaozhi was suppressed, Nong Zhigao invited the Great Song Dynasty, hoping to live with the Han people.

It's just that the Great Song Dynasty at that time didn't accept it, Nong Zhigao didn't do anything, and even the Great Song Dynasty rebelled.

Jiaozhi saw that Nong Zhigao was making trouble in the south, and he also wanted to take the opportunity to do something, but Song Renzong sent Di Qing to lead the troops south, which not only succeeded in quelling the rebellion, but also drove Nong Zhigao to Dali, and finally died in Dali.

Jiaozhi is now Annan, they stir up trouble on the border, the army of the Great Song Dynasty came, they ran, the army retreated, they made a comeback, it was annoying, the Great Song Dynasty didn't even want this place, didn't want to play with these people as neighbors.

Yang Jing had long known the shameless temperament of these black monkeys, and after hiring the Zhuang barbarians under the command of Jiang Manyu and others, he accelerated the march.

After leaving the territory of Guangxi, they entered the territory of Annam, and although they were fully prepared, the sergeants were still miserable.

This place is hot and humid, mosquitoes and poisonous snakes are everywhere, even those flowers and thorns are very annoying, and most of them are terrible poisons.

At this time, the advantage of the Zhuang barbarians was reflected.

They don't have much weight, the rattan armor on their body is very light, these rattan armor is made of unique rattan after being grilled and soaked, and then skillfully woven by hand, very lightweight, and has a very strong protective effect.

Although it can't be said to be invulnerable, it is enough to deal with Annan's backward bamboo bows and arrows.

On the other hand, the forbidden army of the Great Song Dynasty, because they wore armor, the weight was too large, and they were suffocating, they were not accustomed to the water and soil, and the heat was unbearable, and many people fell ill on the road.

Yang Jing asked them to take off their armor and then smear it on their faces, legs and feet with clean mud, which can play a good role in protecting against mosquito bites and so on.

At first, these sergeants were naturally psychologically resistant, but later experienced the magic of this method, and they followed suit.

But these are small things, and the real problem has finally come, and that is malaria!

Malaria is transmitted through mosquito bites and other blood, and it spreads quickly and very violently, and the population density of the army is too large, and the spread is very fatal.

The sergeants were already tired from the long journey, and the situation was even worse when they contracted malaria.

They would be cold at first, and the jungle was so hot and humid that their bodies looked like they were in a steamer, but their bodies and hands and feet were cold, and they had goosebumps all over their bodies, and their lips and nails were cyanosis.

And their muscles were sore, they were shaking, they couldn't walk at all, and finally after the cold period, they began to heat up again!

This jungle is already sweltering, and no matter how hot the body is, it is simply a kind of torture that cannot survive and cannot die.

Finally, after the hot period, you will start to sweat profusely, and the whole person will be hollowed out and become extremely weak.

Malaria is one of the deadliest diseases in the wild, although Yang Jing has done epidemic prevention in advance, strictly ordering soldiers not to drink raw water, only boiled water, but still can not avoid the birth of the epidemic.

At this time, if there is an antimalarial drug such as quinine, it is a medicine to eliminate the disease, but unfortunately it cannot be found at all, this quinine is also extracted from plants, but the technology is limited, even if Yang Jing can find raw materials, there is no way to refine so much pure golden chicken frost.

Ge Changgeng had already left and returned to Jiangling to find his wife, although Yang Jing had Lu Baiyu and others by his side to help, but after all, he couldn't catch it.

Those military doctors also have no technical content, and they are not good at dealing with external injuries, and internal medicine is not a top matter at all, and Lang Zhong, who dealt with external injuries in ancient times, is not a doctor at all, and his status is very low, otherwise who would go to the army to practice medicine.

In this way, these things are also pressed on Yang Jing's shoulders.

Fortunately, Yang Jing left a hand, and he had considered such a possibility with Ge Changgeng early, and Ge Changgeng left a lot of recipes.

Of course, there is no shortage of medicinal herbs in this jungle, but the varieties are not so complete, and you can't always drill around and let poisonous snakes bite you to death in order to find a few herbs.

Yang Jing looked at a few prescriptions and finally chose one to use.

This is a convenient treatment for malaria with verbena!

Verbena is everywhere, this grass is like a horsewhip, full of barbs, and it hurts to pierce people, just like cangzi, and those barbs will pierce people's legs, feet and bodies, and the wounds are itchy and painful.

Yang Jing used adjuvants such as verbena and Bupleurum to finally control the epidemic, and only after crossing the Fuliang River did he stop to rectify the army.

Seeing that he was about to arrive in Liangshan, Annan's side finally sent people to meet the army of the Great Song Dynasty, led by Nong Chi Gao, as well as Annan's Tai Lieutenant Nguyen Van Hung.

The Li dynasty vigorously promoted Confucianism, imitating the system of scientific examination and scholar selection in the Great Song Dynasty, and the official positions were also set up as three dukes, three young people, Taiwei, Situ, Sikong and the like.

It has also been said earlier that the reason why the Chen dynasty was able to replace it was because Chen Shoudu asked his nephew Chen Xuan to marry Li Zhaohuang, the queen of the Li dynasty, which swallowed the Li dynasty.

Chen Xuan did nothing, just a puppet, but Chen Shoudu is a powerful person, in order to place the restoration of the Li family, he let all the surnames of Li change their surnames to Nguyen, even in later generations, the surname Nguyen is the first surname in Vietnam.

This Tai Lieutenant Nguyen Van Hung made a great effort when the Tran clan seized the country, controlled a large part of the army in Annam, and was a confidant of Chen Shoudu, so he came up to meet Yang Jing's army this time.

Ruan Wenxiong was also a soldier who knew the army, and he was also wary of the Great Song Dynasty, bringing thousands of people over, but he was unwilling to let the army go further south.

only said that Yang Jing should take his relatives to meet Chen Xuan, the lord of the Chen Dynasty, and Chen Shoudu, the Taibao.

This Ruan Van Hung is about fifty years old, dark and thin, but his eyes are as fierce as a poisonous snake and beast.

Nong Chi Gao has completely become a leading party, and has no right to speak, after Yang Jing met with Ruan Wenxiong, Ruan Wenxiong wanted to get off the horse.

It's a pity that he met Yang Jing.

Yang Jing looked at this old man, and then opened his mouth and said to him: "Taiwei Ruan, if the news of this commander is not bad, Kublai Khan must have broken through many fortresses such as Xianzi Pass, Zhangyangdu, Xijie, and Wanjiao, but I am afraid that now I will block the national capital Shenglong, right?"

This Thang Long is the later Hanoi, and it has always been the center of Annam, because the area of Annam is a wide terrain from north to south and narrow in the middle, and it takes a lot of consideration to build it, and this Thang Long is the most suitable area in terms of geographical location.

Yang Jing wanted to deal with the Annan people, how could he know nothing, and let Jiang Manyu's Zhuang barbarians take secret inspectors early to find out the situation clearly!

Yang Jing shouted like this, Ruan Wenxiong really turned pale, his expression was fierce, and he forced himself to calm down.

"Marquis Yang's ability is really great, but these Mongolian barbarians can't get any benefits, this miasma makes them miserable, even without the support of the Great Song Dynasty, they will withdraw sooner or later. ”

Yang Jing saw that Ruan Wenxiong wanted to save face, so he didn't say anything, but just smiled.

"What General Ruan said is very true, I am afraid that Chen Taibao does not think so. ”

"If Ben Shuai is not mistaken, did the prince of the Chen Dynasty ever beg to surrender to the Mongols, hoping to eliminate the military disaster by paying tribute?"

As soon as Yang Jing's words came out, Ruan Wenxiong's eyes widened angrily, but he was quickly defeated, because Yang Jing was like an unpredictable prophet, and he actually said it all!

These inside stories are not something that spies can find out, if Yang Jing didn't have the wisdom of a prophet, how would he know!

These pieces of information are really not found by the secret inspectors, Yang Jing had taken a lot of information from Nong Chigao's mouth earlier, but that was more than a month ago, and it had long lagged behind.

The reason why Yang Jing knew was because when he was thinking about the prescription a few days ago, he suddenly remembered a documentary he had watched before.

The documentary is about the death and wounding of the expeditionary force in the Savage Valley during the war years, how the rainforest is a nightmare for the army, and incidentally mentions the historical information that the Yuan Dynasty invaded Vietnam three times but finally returned with a feather.

According to the historical trajectory, Kublai Khan's expedition to Vietnam will take another year, but Yang Jing stirred up the storm in Har and Lin, and Kublai Khan invaded early in order to drag the thunder, which Yang Jing could not predict.

However, Yang Jing was also thinking that although it was advanced, the situation was the same, and Kublai Khan was afraid that he would use the same strategy.

He was actually not sure, this was to call Ruan Wenxiong, he couldn't remember these place names, when he remembered it a few days ago, he asked Zhang Changling, Jiang Manyu and others, but he felt that these names were a little familiar, and he used them now.

And even when he said it, Yang Jing was vague, for fear that Ruan Wenxiong would hear the difference.

However, Ruan Wenxiong is a native of Annam, and Yang Jing's Great Song official dialect also has some accents, and these place names are originally transliterated, which sounds plausible.

In short, Yang Jing successfully suppressed Ruan Wenxiong, because others don't know, but Ruan Wenxiong knows it!

Kublai Khan could not attack for a long time, and the Chen Dynasty was also miserable, so Chen Shoudu sent people to negotiate peace, willing to surrender to Mongolia, and put forward the condition of "one tribute for three years", and in exchange, Mongolia immediately withdrew its troops, and the Chen Dynasty was willing to accept the "King of Annam" canonized by Mongolia.

However, Kublai Khan was unwilling to withdraw his troops, but let the Chen Dynasty surrender, and let them take the opportunity to go north and attack the Liangguang Road of the Great Song Dynasty!

Even Nguyen Van Hung knew to be wary of Yang Jing's false way to attack him, and the Chen Dynasty's request to Kublai Khan must have been refused.

In addition, Nong Chigao brought back the news of the Great Song Dynasty, blowing the coach Yang Jing into a god-like existence, and shaping the artillery into a powerful artifact like thunder, Annan is sandwiched in the middle, and it is difficult to be a man at both ends.

But Chen Shoudu is a brain after all, Annan borders the Great Song Dynasty, which can be described as a strip of water, while Mongolia is fighting for thousands of miles, the Mongols lost the big deal and ran away, they can't run, no matter what, anyone who has a little brain, knows that they should surrender to the Great Song Dynasty, not Mongolia!

Unless Mongolia beats the Great Song Dynasty to death from the north or southwest at this time, how dare they choose Mongolia!

Besides, Nong Chigao brought back not only Yang Jing's intelligence, but also the news of the Northern Expedition of An Fengjun and other Great Song Dynasty border armies!

The recovery of Lianghuai is Zhao Yun's "great achievement", and the domestic praise of virtue is about to blow to the sky, and when Nong Chigao came back to say this, Chen Shoudu naturally knew that it was impossible for Mongolia to destroy the Great Song Dynasty in a short time.

In this way, it is naturally easy to make a choice.