Since June and July, the Forbidden City has undergone constant changes, and the relatively precious glass products of this era have been successively applied to the doors and windows of various important palaces in the Forbidden City.

Not only the three major halls have been renewed, but also the Wenhua Palace, Wuying Hall and Cabinet Hall of the Outer Dynasty, the Qianqing Palace and Kunning Palace in the Inner Palace, the Ciqing Palace of Empress Yi'an, and the palaces and pavilions of several other concubines such as Zhongcui Palace and Chuxiu Palace have all been replaced with richly decorated flat embossed glass.

Although the relatively heavy flat embossed glass of this era cannot be compared with the float flat glass that first appeared in the West more than 100 years later, such as thickness, flatness, transparency, etc., it cannot be compared, but compared with window screen paper, it is much superior.

Of course, in the summer, it is not completely visible, and in the winter, its thermal insulation and lighting effect will far exceed the best window paper of this era.

The main palace complexes in the Forbidden City have been replaced with flat embossed glass in more than a month, changing the dull and gloomy style of the past, and suddenly becoming relaxed and bright.

Even the Qianqing Palace, which made people feel the most gloomy and depressing in the past, because of the bright doors and windows now, made the palace maids and eunuchs who served the emperor's diet and daily life feel a lot more relaxed.

At least the palace maids and eunuchs, who had always lived by looking at the emperor's face, were finally able to see the emperor's face very easily.

The emperor in their eyes is no longer the emperor who sat in a dark corner in a silent and thoughtful way all day long.

Of course, in the face of these bits and pieces of changes in the Forbidden City, the happiest person is the current Emperor Chongzhen himself.

If this era is to continue to move forward, especially in the direction of modernity, and continue to move forward vigorously, then the emperor himself and the imperial palace must not exclude new things.

Not only should we not reject it, but we must take the lead in using it, be willing to set an example for the people of the world, and popularize it as soon as possible.

Of course, muskets and artillery are not as complex and diverse as traditional cold weapons, such as swords, guns, swords, halberds, axes, hooks and forks.

Whether it is glass products or cement products, there are naturally no window screens, porcelain, or glazed tiles made of silk and rice paper, which are full of artistic atmosphere, but the emergence and use of these new things means the progress of social production technology.

And this kind of progress is what the Chongzhen Emperor values the most.

As long as this pace of progress is not artificially interrupted, then the national strength of the Ming Dynasty will slowly recover, and the scientific and technological level of the Ming Dynasty will not lag too far behind the West of the same era.

Then, in a dozen years, or hundreds of years, the land under our feet and the people on this land will not be slaughtered by the enemy unscrupulously and arbitrarily.

One morning at the end of July, Emperor Chongzhen sat in the imperial study of the Qianqing Palace, where the windows were bright and clean, quietly reviewing the excerpts submitted by Bi Maokang, the secretary of the Ministry of Industry, Li Tianjing, who was to be appointed as the priest of the Huangming Institute of Technology, and Song Yingxing, the secretary of the industry, and the "Regulations of the Huangming Institute of Technology" submitted together with the excerpts.

According to their own ideas, they painted and changed in circles, and predetermined the first batch of research tasks after the establishment of the School of Engineering, such as hot air balloons.

On the other side, I was waiting for a message to come with a little anxiety.

The issue of the emperor's heirs has always been a major national matter.

For Emperor Chongzhen, who was a brother and a young man, the issue of heirs was particularly important.

However, at the beginning, he himself was actually not in a hurry about this problem, because he was only seventeen or eighteen years old, and there was time in the future.

Second, Queen Zhou, Concubine Tian and Concubine Yuan are only sixteen or seventeen years old, they are too young, and pregnancy and childbirth are not very good for themselves and the healthy growth of the children they born.

Moreover, in history, Emperor Chongzhen's heirs were not few, Empress Zhou gave birth to three sons and two daughters, and survived two sons and one girl, namely the eldest son Prince Zhu Cihong, the third son Ding Wang Zhu Cijiong, and Princess Changping.

Concubine Tian gave birth to four sons, two of whom died young, and two survived, namely Zhu Cizhi, the Yongwang and Zhu Cihuan, who perished before he could be crowned king of the Ming Dynasty in the future.

And Concubine Yuan, who has a quiet temperament and has no quarrel with the world, also gave birth to a princess, that is, Princess Zhaoren.

In addition, there are three princesses born to several concubines, who died soon after birth.

Counting up, Emperor Chongzhen's concubines gave birth to a total of thirteen children, and those who grew up smoothly had four sons and two daughters.

There were three sons and four daughters who died young, including the second son and the eldest daughter of Empress Zhou.

It is also conceivable that it was difficult for children to survive after speaking out at that time, even for the children of the emperor and empress, the superior conditions in the Forbidden City could not ensure that the children could survive smoothly after birth.

Of course, this has something to do with the health and medical conditions of the early 17th century, but it also has something to do with the fact that the concubines of Emperor Chongzhen were too young.

It was with these factors in mind that Emperor Chongzhen was not in a hurry at first, everything went naturally and was arranged by heaven's will.

However, two years have passed in the blink of an eye, and in the harem, whether it is Queen Zhou, Concubine Tian and Concubine Yuan, who have been sleeping constantly, or Concubine Lan Hai Lanzhu, who entered the palace at the end of Chongzhen's first year, there is no movement.

Emperor Chongzhen, who has been busy with military and political affairs in the DPRK, suddenly realized this problem one day, and he was no longer calm at that time.

Since these concubines have given birth to children in history, the problem is not with these concubines.

Including the Lan Concubine Hari Zhula, who entered the Forbidden City in this life, also gave birth to a child in the original history, but the child died at a young age.

However, in any case, none of the harem concubines who have taken any protective measures or birth control measures have any stomach movement, and behind this situation, there is a big problem.

Emperor Chongzhen, who was not in a hurry, gradually became a little anxious after entering Chongzhen for two years.

As Emperor Chongzhen's quick knife placed in the Imperial Courtyard, Jia Jichun, the left deputy of the capital, also made an excerpt, asking Emperor Chongzhen to consider the national society, let the inner court and Jinyiwei cooperate, and select a group of show girls for the emperor's harem in Beizhi, Jiangnan, Shanxi and other places.

Including Empress Yi'an and Empress Zhou, they also persuaded the emperor to accept this opinion, after all, for ordinary people, they are all unfilial piety, and no queen is great, not to mention the king of a country, how can he have no heir.

However, for Jia Jichun's letter requesting a draft for the emperor's harem, Emperor Chongzhen not only did not accept his opinion, but also explicitly reprimanded him and suspended him for half a year as a punishment.

said that the emperor didn't want the draft girl to enter the palace, of course, it was fake, but in the stormy era of the late Ming Dynasty, let the eunuchs bring brocade clothes or something to draft the draft girl with great fanfare, this is really a bit off the table.

is to maintain the image of the emperor, and now this Chongzhen Emperor can't do this!

Otherwise, wouldn't the previous move of allowing the older palace maids to go out of the palace to marry, and also giving them a dowry and giving them a dowry, wouldn't it be immediately wasted?

But disagreeing is not agreeing, and when the officials in the court began to pay attention to this issue, Emperor Chongzhen himself realized that he had to work hard.

Therefore, starting in February of the second year of Chongzhen, that is, the month when Zhu Cihong, the eldest son of Emperor Chongzhen, was born in history, Emperor Chongzhen changed the bedtime that was very casual in the past, and set the rules for the bedtime of the concubines.

In the first half of each month, it belonged to the Empress Zhou, and in the second half of the month, from Concubine Tian, Concubine Yuan, to Concubine Lan, they took turns to live in each concubine's palace for five nights, and began a crazy man-making movement.

Of course, when it is inconvenient for the concubines, at the insistence of the concubines, they will half-push and half-sleep the concubines' cronies and maids.

In this way, after more than four months of hard work by Emperor Chongzhen, Concubine Lan of Chuxiu Palace finally came with exciting news.

However, it is suspected that she has a pregnancy reaction, and she may be pregnant with a dragon, but it is not Concubine Lan herself.

It was the personal maid Ulan Tuya brought by Lanfei Hai Lanzhu all the way from the Horqin grassland.