Thang Long is the capital of the Chen Dynasty, and in the Tang Dynasty, Annam was Jiaozhou, and the Annam Protectorate was set up, and the city was built in Jiaozhou as the station of the Annam Protectorate.

This city is the political, economic and cultural center of Thang Long, named Purple City, and then renamed Luo Cheng and Da Luo City, so Jiaozhou is also called Luo City.

In the Southern Song Dynasty, Li Gongyun, the Taizu of the Li Dynasty, was also an arrogant person, believing that Da Luo City was in the center of the world, rich in products, and prosperous in exchanges, so he moved the capital of Da Yue to Da Luo City.

Li Gongyun also played Xiangrui's set, and the saying at the time was that when he arrived in Daluo City, he happened to see a yellow dragon soaring into the sky and soaring to the Nine Heavens.

Li Taizu thought that this was an auspicious omen and the will of heaven, so according to this auspicious rui, he renamed Daluo City "Shenglong".

Now the Chen Dynasty has replaced the Li Dynasty, but the national capital is still Thang Long, just as Chen Shoudu ordered everyone with the surname Li to change their surname to Nguyen, in order to erase the traces of the Li Dynasty, he also changed Thang Long to "Long Yuan City".

Due to the geographical location, Longyuan City connects the north and south, the traffic is very reachable, and the products are relatively rich, so the capital of the country has always maintained a prosperous scene.

Yongyuan was divided into an inner castle and an outer castle, the inner castle was the forbidden city where the lord and queen lived, then the imperial castle used by the emperor and courtiers for their offices, and the outer city was the capital city where the market and residential areas gathered.

The prototype of this Longyuan City is the ancient snail city in BC, and it really began to be built on a large scale when the Tang Dynasty set up the Annan Protectorate, so the entire city is actually the Han system.

Just like the Annamite and the ancient Koreans, because they were once a vassal state of China, they all closely followed the footsteps of Sinology in the Central Plains, whether it was writing, the imperial examination system, or the fashion trend of the upper class.

The official script of the Annamite people was Chinese characters, but their language was not Chinese, Confucianism was promoted, and the imperial court also established a system of imperial examinations, and around the 15th century, they used Chinese characters to create their own script, that is, "mumbling".

As for the script used by the Vietnamese people today, it was formed in the 17th century when French missionaries used the Latin alphabet as the basis, added several new letters, and supplemented them with diacritics.

Don't talk much about it, just say that this Longyuan City is the center of the Chen Dynasty, but now it has become fat in the eyes of the Mongols, and the Mongolian army that has not been able to attack for a long time has long been red-eyed, and is frantically fighting!

Chen, the lord of the country, was just a puppet, but because the last queen of the Li Dynasty, Li Zhaohuang, was his wife and gave him the throne, he was also justified, and his uncle Chen Shoudu had to secretly manipulate the state authority, but he did not dare to usurp the throne openly.

Chen was originally cowardly, but now that the catastrophe is coming, where is there any idea, it is completely dependent on Chen Shoudu to support the overall situation, as for the Song Dynasty or Mongolia, it is naturally Chen Shoudu who is taking the idea.

Don't look at the Mongols' conquest of the world, their iron horses are not of any use in a jungle like Annam, because there is no place for heroes, and there is no plain to gallop on.

Even their world-famous archery skills could not be used as they should, because the terrain here was not open, it was a dense jungle, and they could not form a formation, and at some point a few brutes would come out from the side, slit the throats of the soldiers, and then disappear like ghosts.

The Mongols lived farther north than the Song people, they were accustomed to cold weather, and when they came to the hot and humid south, they became more sick than the Song people.

The Song people also had Yang Jing to treat them, using various methods to maintain their health and physical strength, and their fighting spirit was still strong and their combat effectiveness was still strong.

However, the medical skills of the Mongolians are relatively backward, and the medical skills are not too targeted, and there is no way to start with diseases such as water and soil adaptation and malaria in the south, and there is no medicine to treat.

Since entering Annam, there have been several times more people who have fallen ill on the road than they have died on the battlefield, and a large number of them have fallen without touching the face of the enemy.

Kublai Khan was also a little anxious, thinking that a small country like Annan was not as good as Dali, and Dali had been conquered by him with lightning speed.

It's just that things are beyond his expectations, the Annamite people did not surrender, but chose to resist to the end, Kublai Khan can't give up halfway, just like a gambler who has lost more than half of his money, if he doesn't get his gambling money back, who is willing to slap his ass and leave?

This kind of thing is also like the unwilling gambler, the more unwilling, the deeper he will fall, the heavier the loss, to the point where it is difficult to ride a tiger, as long as he does not lose all, he must persist until the last moment.

Nguyen Van Hung led thousands of people to break through the siege, and Kublai Khan had been carefully guarding the rear, but Nguyen Van Hung had not come to relieve the siege, so he knew that Nguyen Van Hung had moved the rescue troops.

As for who to ask for reinforcements, it is not difficult to guess, the Great Song Dynasty and Annan are separated by water, and they used to be the suzerainty of Annan, whether it is in terms of name or interests, the Great Song Dynasty should send troops to reinforce.

Even if Annan had invaded the border of the Great Song Dynasty countless times, as long as the officials of the Great Song Dynasty still had brains and thought about the overall situation, they should accept Annan's request for help.

Kublai Khan thought that the Great Song Dynasty would definitely help, and he would pretend to send troops anyway, and it would be good to deter him, but as for how many soldiers and horses the Great Song Dynasty would send, he was not sure.

At this point, he can only bite the bullet, even if he fights the last soldier, he must persevere to the end.

If you want to concentrate on dealing with the reinforcements, you must take Longyuan City as soon as possible, otherwise you will be in big trouble by the enemy at that time!

Although the scale of Longyuan City is not small, it is still slightly weaker than Dali, and the city is not too easy to defend and difficult to attack, mainly because the periphery of the city is the terrain of paddy fields and dense forests, and tens of thousands of troops do not even have a place to stand, let alone any formation.

As for siege equipment and the like, although there are many woods around, it is very dangerous to enter the woods, and it is extremely time-consuming and laborious to build these equipment.

However, they lost the advantage of horse riding and shooting, so they could only fight the battle honestly, although the time was a little shorter, but they still built a lot of siege equipment.

Compared with the Jurchens, the Mongols are better at learning, they are more bold than the Jurchens to drive the aliens, they have not forgotten their traditions, the Mongols are good at learning not the technology itself, but the art of maneuvering!

The Mongols were an extremely stubborn people, so they were the weakest dynasty to accept Sinicization, and they did not use Chinese as the official language in their end, and the status of Han officials was not as high as imagined.

But they captured many captives along the way, and used them to lead the way and solve all kinds of difficult problems.

Even at the critical juncture of the siege, the Mongol soldiers still did not go into battle in person, because they had Dali's soldiers as cannon fodder!

The soldiers of Dali were gone, and there were new annexed troops, and the new annexed army was gone, and there were Han troops, and even the Han army was gone, and the Mongolian pro-army went into battle in person.

From this point of view, Kublai Khan was extremely wise, because the losses were already heavy before the siege, and the losses were even greater after the siege!

As mentioned before, Annan is a place where all the people are soldiers, and the people here are fierce, as long as you throw him a bamboo gun, he can kill!

Finally broke through the outer city, Kublai Khan's side has suffered more than half of the casualties, the epidemic has exploded in the military camp, and the number of soldiers who can fight has decreased sharply in a short period of time, and this degree is getting faster and faster!

"We must capture Long Yuan as soon as possible, otherwise everything will be lost!"

Kublai Khan is in the prime of life, both wisdom and energy, are at their peak, less youthful, more calm, it is the golden age of the Mongols, and it is also the best age for making contributions!

However, the resistance of Longyuan City is really a bit unimaginable, the Mongols have climbed the city several times, and have been defeated back three times, the lower the morale, the more unstable the morale of the army, and even the generals have begun to retreat!

For these generals, Annan was a barren and barbaric place, and there was no good to be gained at all, and even the women here were all black, short, and thin, which made people not arouse any interest.

They are a bunch of mercenary robbers and butchers, and they don't have the heart to do unprofitable things, so that the passion for fighting before the expedition gradually fades.

Unlike the Western Expedition, although the West is also full of unknowns, the West is full of all kinds of temptations, countless treasures and beauties, and countless new gadgets.

And there is no wealth here in Annan, only fear is unknown, only poisonous snakes and beasts that have emerged out of nowhere, only those poisonous plants and flowers and fruits that look delicate but actually pierce the intestines.

The mosquitoes here are bigger than flies, and they are poisonous, even toads are so poisonous that if you accidentally step into the mire, you will be devoured in the blink of an eye, and you won't even have time to call.

What's even more disgusting is the leeches everywhere, whether it is a water leech or a mountain leech, as long as it is stained, it is difficult to let them loosen their mouths, and if they want to forcibly tear it off, they often need to be scraped with a knife, otherwise they will be torn off with the skin.

At that time, there was no such thing as underwear, leeches and small snakes and the like, which would burrow into their bodies from their clothes and through their hidden holes, and slowly gnaw at their stomachs, which was simply worse than death!

It's rare to finally come to Longyuan City, the national capital, and the soldiers also want to finish their work early, but the people of Annam have already prepared, not to mention the food and water in the city, and the soldiers are also as many as cows!

The only weakness of these people is the gap in weapons and equipment, but these people are not afraid of death one by one, like monsters and monkeys, this desperate strength is enough to make up for the gap in weapons and equipment.

Today is the sixteenth day of the siege, which is simply a shame for Kublai Khan to be unable to attack for such a long time, so he gave a death order, not to destroy the city, but to start killing his own people!

The Mongol pro-army had to go into battle in person, otherwise the commander would have cut off their heads!

Finally captured the outer city, and the Mongols were also very excited, because this kind of thing is like a young man and woman who secretly tastes the forbidden fruit, eating the marrow and knowing the taste, with the first time, there will definitely be a second time!

Now that the outer city is broken, the inner city is only a matter of time!

Kublai Khan couldn't sit still any longer, he should have been in charge of the Chinese army, and he also changed his old style when he went out on this expedition, and rarely fought in advance, because these Annamites were too cunning, and they might be killed by the assassins who suddenly appeared!

It's just that at the moment, Kublai Khan couldn't care about this, so he picked up his long knife and attacked the gate of the inner city under the protection of hundreds of personal soldiers!

Because it is a Han architectural style, it is naturally a defensive pattern that is loose inside and tight outside, the walls of the inner city are not high, and the defensive ability is not high, so Kublai Khan put the main force of the attack on the inner city gate!

"Boom!"

"Boom!"

"Boom!"

The spitting flame-spitting dragon head crashed into the car, and under the impetus of the Mongol warriors, it continued to pound the crumbling city gate!