Regarding what Emperor Chongzhen said, Hai Lanzhu did not have any opinion and completely agreed.

If all this can become a reality, then for Hai Lanzhu, there is no better result than this.

She has been Emperor Chongzhen's concubine for almost two years, and now she has become one of the two most noble concubines in the Forbidden City besides Empress Zhou and Empress Yi'an, and gave birth to a daughter to Emperor Chongzhen.

Her heart has long been on this side of the Ming Dynasty, and what she hopes for now is that her hometown and people can also stand on this side of the Ming Dynasty.

Because of such a choice, it is a favorable thing for Horqin, for herself, including for the Ming Dynasty.

From then on, she no longer needed to worry about her clansmen in Korqin, her status in Emperor Chongzhen's heart, and her status in the palace.

Soon, on the third day after Emperor Chongzhen came to Chuxiu Palace to visit Concubine Lan and the newborn Princess Kunyi, the Mongolian man Haskan, who was born in the left-wing Mongolian tribe of Horqin and has been serving as the servant of Horqin in Manzhu Xili, followed Yang Zhen and Deng Tianhe, the military attaches of the imperial chamberlain, to Zhangjiakou.

They brought letters and gifts from Lan Guifei Hai Lanzhu, as well as letters and tokens from Hai Lanzhu's younger brother Manzhu Xili, as well as official documents from the Imperial Court and the Ministry of Internal Affairs.

They will stay there for the same day, and then take a caravan of the Hengxing Company, one of the four Hengs of the Ministry of Internal Affairs in Zhangjiakou, out of the fortress to the place where the left wing of Horqin Mongolia is stationed north of Chaganhot.

As for the goods brought by this caravan, Emperor Chongzhen gave Yang Zhen and Deng Tianhe an edict to let them set out from Zhangjiakou with only silk, cloth, brick tea, porcelain, pottery, and glass products of the Hexi Wuluoge Company, which had royal shares, such as cups, mirrors and other gadgets.

At the same time, Emperor Chongzhen also asked Yang Zhen and Deng Tianhe to pass through Zhangjiakou, Dushikou and other places, to Li Jishan, the deacon and eunuch of Dushikou Hengtong Company, and Wang Jiadong, the deacon and eunuch of Zhangjiakou Hengxing Company, and others:

"Anyone who travels to and from the north of the Saibei, from the emperor's relatives to the peddlers' pawns, and dares to violate the ban on the export of copper and iron, will be punished!"

Not to mention iron armor and weapons, even if there is even an iron pot, Emperor Chongzhen will never allow it to be exported to the Horqin tribes outside the Guanguan at this time.

At least before the Horqin tribes decided to attach themselves to the Ming Dynasty, Emperor Chongzhen didn't want to send any wrong signals to the traders along the border because he let Zhangjiakou send a caravan north to Horqin.

It was not easy to kill the traitorous Jin merchants, cut off the trade routes of the Horqin tribes and the Jin State after the establishment of the captivity, and cut off their external sources of strategic materials such as iron tools and grain.

Other things, such as silk satin, tea, ceramics, glass products, etc., are all good to say, and as for copper and iron, they can be remelted and used to cast guns.

Now, after the capture of the Han Army, Jin Guoli compiled the Han Army Banner, and recruited craftsmen with the Han Army Banner as the main thing, and supervised the construction of heavy artillery, which has been detected by the spies of Jinyiwei and Dongchang.

There are many blacksmiths in the Eight Banners of Shenyang City, but unfortunately, the copper and iron things that can supply these blacksmiths to make guns are not surplus.

The Jurchens of this era did not have the mature technology to mine copper and iron ore to smelt copper and iron, and their limited iron-smelting capacity could only barely be used to make cold weapons.

If in history, there was no large amount of pig iron exported by the Jin merchants to the Later Jin Kingdom, then no matter how superb the blacksmith forging level of the Jurchens was, it would be difficult for a clever woman to cook without rice, and they would not be able to equip a large number of troops at all, nor could they support continuous wars.

From this point of view, the crimes of those captive merchants, especially those who have been captive to Jin, cannot be overstated.

Now that the way of exporting grain and iron tools to the Jin Kingdom has been cut off, as long as the Ming Dynasty is stuck in the smuggling trade of the Wulu General Military Mansion in Dongjiang Town, a few years later, not even a few years, the war potential of the Jin State will shrink by itself.

At present, the trade outside the border of Jizhen, the permission issued by the government office under the Yamen of the Rehe Governor, is the farthest to the north, and it only reaches the rebuilt Yingzhou City (three towers, Chaoyang of Liaoning in later generations), and comes to the Kulun and Karaqin tribes of Yingzhou City to trade.

Those who dare to leave Yingzhou without permission and go north to trade with the Horqin tribes will be killed.

As for the trade of Dushikou, Zhangjiakou, Deshengkou, and Hukou, it is now dominated by the "Four Hengs" directly managed by the Ministry of Internal Affairs.

In addition to the four great Heng, the merchants in the customs who went north from Dushikou and Zhangjiakou can only go as far as Duolunuoer and Ulan Hada, and the merchants in the customs who go north from the victory mouth and the killing Hukou can go as far as Guihua, Jining, Wuchuan and Jiuyuan.

Among them, the trade caravans of the four constants are naturally not subject to this restriction, except for the Horqin tribes, which can only trade by order, other Mobei Mongolia and Moxi Mongolia can pass unimpeded.

However, there is one thing, that is, those who dare to violate the ban on copper and iron export will be killed!

Such a ban, as early as the beginning of the establishment of the Four Great Hengs, has been posted everywhere in the four passes along the border of Xuanda, namely Dushikou, Zhangjiakou, Deshengkou, and Zhuhukou.

This time, Emperor Chongzhen followed the opportunity of Yang Zhen, Deng Tianhe and others to lead the team north to Horqin, and once again re-mentioned this ban, because he was worried that the officials and ministers who were in charge of the Four Great Hengs would be wrong, and in order to cater to the favor or to please the favored Concubine Lan, something went wrong on this issue.

After all, Korqin's mind is still elusive.

Because in history, this Horqin people were famous traitors and traitors among the Mongols, and even after a few hundred years, the Horqin Mongols were hostile to other Mongols, such as the Chahar Mongols and the Ordos Mongols.

The reason is that the Horqin people were the first to betray the Mongol Khan Lin Dan Khan, the first to take refuge in the Jurchens, and then as the leading party and accomplice lackeys, led the Jurchens to conquer the entire Mongolian plateau.

For this, until hundreds of years later, the Mongols of other tribes did not forgive the Korqin people.

And this also shows that it is not so easy to dig up the Horqin people from the Jurchens.

Therefore, the economic blockade of the Horqin people and the Jurchens will continue, and only when Emperor Chongzhen can confirm that the Horqin people have betrayed the Jurchens, will he consider lifting the ban on grain, copper and iron.

Of course, the blockade of the western front of the Houjin State is only one aspect, in addition to the western front, that is, the Horqin Mongolian line, the blockade of the Houjin State from the direction of Liaodong and Korea must also be strengthened.

Previously, Emperor Chongzhen had strictly ordered the Liaodong Governor's Mansion not to allow merchants in Guannei or Ningjin to go north out of Jinzhou and north to trade in Yizhou.

Originally, the trade with the Kulun tribe outside the city of Uiju was changed to Yeongju Castle after the reconstruction further west.

Several major trading houses in Ningyuan, Jinzhou, Yizhou, and Yingzhou, such as Hongji Commercial Bank, Chen Ji Commercial Company, Wang Ji Commercial Bank, and Zuji Commercial Bank, basically monopolized the trade between the south and the north.

Merchants who went north from Shanhaiguan had to return after arriving in Ningyuan and completing their transactions with these trading houses in Ningyuan City.

Hung Kee and other trading houses purchased all kinds of southern goods, such as silk, cloth, grain, spirits, ceramics, medicinal herbs, etc., from traders from the south, and then sold horses, cattle and sheep, furs, and other local products purchased from various Mongolian tribes to the merchants from the south.

Many traders from the south did not even have the opportunity to come out and contact the Mongol tribes.

Needless to say, Hongji Commercial Bank is still under the control of Dongchang and is Dongchang's underground intelligence station in Liaodong.

Several other commercial houses are also from the background of officials and businessmen, such as Chen Ji of Chen Guowei's family, Wang Ji of Wang Zhenyuan's family, and Zu Dashou family.

In the original history, the Chen family and the Wang family have always traded with the Mongols, mainly the Karaqin tribes, and the ancestral family is not easy to say, it belongs to both ends, eating the food of the Ming Dynasty, and smashing the pot of the Ming Dynasty, basically monopolizing the trade between the Ningjin area of Liaoxi and the agents of Jianyu.

This is also the reason why Shanxi merchants could not take the road of the Liaoxi Corridor, but had to go through Zhangjiakou to go out of the customs, go north to Horqin, and then transfer to the Houjin Kingdom.

Because the ancestral family, or the Liaoxi Jiangmen family headed by the ancestral family, monopolized trade in this direction.

However, in this life, Emperor Chongzhen transferred Zu Dashou more than two years ago.

Although the ancestral family still has Zu Dale, Zu Dabi, Zu Kuan and others as generals in the army in Liaodong, none of them have the influence of Zu Dashou, and now no one is the master of the party alone.