Two months earlier, he had returned to the Privy Council as Deputy Privy Councillor. This is the dividend of the war for him.

The war ahead requires a stable court. But at the same time, there is also a need for commanders who have commanded thousands of armies and horses, and civil servants who are proficient in the art of war, to sit in the Privy Council.

Zhang Dan's opportunity was originally Wang Shao's, after all, Zhang Dan's own leading experience was all in the south. Either in Jingnan or in Guangxi. And Wang Shao is famous in the northwest, and he is well aware of the local situation and all the disadvantages, so he is far more suitable than Zhang Dian to assist the Son of Heaven in the Privy Council.

It's a pity that Wang Shao died of illness at the wrong time. If he does not die, the privy envoy will have a chance, have military merits and jinshi, have a high reputation, and have the experience of up to five years of privy deputy envoys. It's a pity that he left too early, otherwise it would be difficult for Lu Gongshu to sit in Xifu again.

With the exception of the Charter, there has been no change in the personnel of the Privy Council, and the members of the Cabinet have not changed much in recent months. However, when the war is over, there will be a big change in both provinces. The government hall and the Privy Council, I don't know how many new faces need to be replaced.

Hangang was stationed in Hedong and stabilized the situation in the north. There is also the great victory of Jialuchuan, and his previous merits have already qualified to enter the two prefectures, and the call should be the highest. If he recovers Fengzhou again, he can't say anything if he doesn't enter Xifu.

There is another possible candidate - the planter. After making great achievements, it is possible for him to become a member of the Privy Council, as Guo Kui, Di Qing and others have done. It's just that the character of this person is not liked by the Son of Heaven, and in addition, Wen Chenzhong has no good impression of this military general who always bypasses the Privy Council to provoke the Son of Heaven to start a war and encroaches on the powers of the Privy Council many times.

However, all this ultimately depends on the thoughts of the Son of Heaven, especially the personnel issues at the highest level, speculation and prediction, just like the fortune tellers who set up stalls in the Zhouqiao Night Market, are always unreliable.

Zhang Dian is not worthy of duty today, but the series of work brought about by the war cannot be postponed until the next day.

Needless to say, on the Hedong side, the rewards for military exploits and the allocation of money and grain for the recovery of Fengzhou are urgent tasks that must be solved in the shortest possible time. The battle in Yinxia was over, but the hand that was stretched out to ask for money and food was not withdrawn, and there were still many surrendered and wounded soldiers to be settled. Several officials from Hangang and Shaanxi Province had previously submitted their own tables, suggesting that Yingli City at the mouth of the Hulu River should be recaptured, in order to take advantage of the geographical location of Yingli City to shield Qinfeng, Xihe and even Jingyuan Road in the rear. This is also a matter of urgency, and it is imperative that the specific strategy be sorted out as soon as possible, signed with the opinion of the Privy Council, and submitted to the Son of Heaven for decision.

There are a lot of things, and when Zhang Dian finishes the official business at hand and gets up to go home, it will be time for the stars and moons to be full.

When I returned home, it was already past the meal, and everyone in the family had eaten. Zhang Dian only had lunch in the palace, and dinner was still on an empty stomach.

Having dinner in a hurry, Zhang Dian planned to go to the school to take the homework of his two sons. When he arrived at the study room where Zhang Zhizhang and Zhang Yuan were studying, he found that there was no progress in the homework in front of them.

The two of them were clutching a cylindrical object to the night sky.

The thing in the hand of his son Zhang Zhi, Zhang Dian knows, is a clairvoyant mirror made by the supervisor. It's a little better than the new article a few months ago. With the use of the spaceship, thieves dozens of miles away don't want to sneak up on the camp.

In the past, the microscope was handed down, and both sons liked to hold it to look at the water, look at the soil, and look at the things around them that could come in handy. The clairvoyant mirror in front of me is actually similar.

Hearing the movement of Zhang Dian coming back, Zhang Zhi and Zhang Yuan were so shocked that they almost jumped up. Hurriedly presented the things in his hand to Zhang Dian.

The clairvoyant mirror is not a plaything, it is used to observe celestial phenomena, it is not worse than the armillary sphere, or rather, it is actually very good to use it with the armillary sphere.

And the other one who watched the heavens, the Yamen Si Tianjian, was full of useless old and useless officials, who even made mistakes in compiling the calendar, and never predicted a solar eclipse on time. I heard that every time the predicted date is approaching, Si Tianjian has to put incense on the gods and Buddhas everywhere, begging that the day must be cloudy. For the appearance of the clairvoyant, they didn't move at all, they still stuck to me and lived as usual.

In fact, the court is also full of waste, occupying empty positions of power, so that talented people cannot be promoted.

Zhang Zhi and Zhang Yuan looked at their father holding the clairvoyant mirror, their faces became more and more gloomy, and they exchanged glances with each other. I secretly said in my heart, is there something happening in the court today, which provokes my father to be angry with them.

Zhang Dan held the brass mirror tube, "You two are holding a clairvoyant mirror and looking at the sky, can you see the blessings and misfortunes?" Can you tell me about your father? ”

Zhangdun's question seems to be a counterstatement, trying to hide the anger in his heart.

Zhang Zhi coughed dryly twice: "Misfortune and blessing, my son still won't." Just to see how the moon waxes and wanes. ”

"And the Milky Way." Zhang Yuan proposed, "After shining with a clairvoyant mirror, it is all stars, and it is not a Tianhe at all." ”

"Oh?" Zhang Dian originally wanted to lecture, but this time he was stunned, and couldn't help but pick up the clairvoyant mirror and look at the stars on the sky.

Looking at the sun in early winter, the sky is cloudless, and the moon is as white as day.

The Milky Way across the sky, when usually looked at the past, is a misty river, but through the lens of the telescope, Zhang Dian was surprised to find that the trace of clouds and mist has been broken down into dense stars. I think it's because there are too many stars and they are gathered together, making people mistakenly think that they are rivers in the sky. And around the stars that we usually see, there are thousands of unknown stars, but they are too faint for people to ignore the past.

Zhang Dun didn't have much knowledge in astronomy, and he didn't have much research, so I don't know if anyone in the past had discovered the true face of the Milky Way. However, the poems describing the Milky Way throughout the ages are inseparable from the words related to the Milky Way, Tianhe, and Xinghan.

Zhang Duan sighed, today I know what the Milky Way is.

He remembered Zhang Yuan's words again, shifted the clairlife mirror at an angle, and pointed it at the moon again.

The shadow in the moon is said to be Chang'e's jade rabbit, Wu Gang's osmanthus, and even the poem of looking for laurel under the moon in the mountain temple, but in the clairvoyant mirror, whether it is osmanthus or rabbit, look at it from the transparent lens, all disappear, just large and small, slightly darker circles.

Looking at it, Zhang always felt that the circles looked like wellheads, or potholes. In Guangxi, about the place where Wulong Prefecture [Baise], which is under the jurisdiction of Yongzhou, went further north, Zhang Dian had heard that there were dozens or hundreds of circular deep pits in the mountains there, the largest one, and the depth and width were more than 100 zhang. Perhaps the circular shadow on the moon is such a pit.

I don't know if Han Gang knows the Tao of the Road, with his understanding of astronomy, he may know the details of the Tao of the Road, Zhang Dian still remembers that he once talked about astronomy with Han Gang. According to Han Gang, the moon, the earth, and the sun are all spherical, one around the other, and the rank of the sun and the moon, like ancestors and grandchildren, cannot be called together. The light of the moon reflects the sunlight, so the change of profit and loss is only the result of the difference in the angle of facing the sun and the earth. The so-called solar and lunar eclipses are created by the three shadowing each other.

Han Gang's statement was very novel to Zhang Tun, but later Han Gang never talked about the topic of astronomy and astronomy, and Zhang Gang stopped asking questions when he saw this, anyway, he was not interested in astronomical stars.

Putting down the clairvoyant mirror in his hand, Zhang Dian shook his head. Although he is not interested in astronomy, there are countless doctors who are interested in astronomy and geography. Just counting the level, it blocks the way for many people to study astronomy. And the apparatus for observing the stars, except for a pair of naked eyes, can only be made by the government. But a clairvoyant mirror for stargazing is much more convenient. In a few years, most of the clairvoyances will be popularized in the homes of some wealthy scholars, just like microscopes. At that time, hundreds of people must have looked at the stars and moon in the night sky every day, just like they do today.

It's just that for Zhang Dan, the earthly things have not been sorted out clearly, so he still has the heart to take care of the heavenly things. As the Master once said, 'If you can't help people, how can you do ghosts?' 'The things of ghosts and gods have nothing to do with people. The things of heaven are all in heaven, and if you live on earth, you should still pay attention to people.

But let them come for now. Zhang Dian thought and returned the clairvoyant mirror to Zhang Zhi.

Facing the two trembling sons, Zhang Dian said: "On weekdays, you still have to put your heart on your homework, and Jinshi is the foundation of everything." However, Zhang Chi has a way, and reading all day and night may not necessarily make much progress. When you take a break, it's okay to fiddle with the microscope or something. ”

Zhang Dian also wandered when he was young, and even stole the concubines of the elders of the same clan, but when it was his son's turn, he just didn't want to see them do the same no matter what. On weekdays, the two sons study hard, and it is better to take a microscope or study the way of things to relax, than to follow the prodigal children who have not done anything to go to the Qinlou Chu Pavilion for recreation. Although physics, arithmetic, and nature are all academics outside the Five Classics, they are now considered serious studies.

Zhang Dian pointed to the clairvoyant mirror again, and his face was solemn: "But this clairvoyant mirror is still put first, the astrological prophecy has always been said together, although the private practice of astronomy is not as strict as it was at the beginning of the country, but if you really want to be criminalized, the lightest is exile." The Son of Heaven has been in poor health recently, the Empress Dowager is in trouble, and the Eighth Prince has died young. ”

Zhang Zhi and Zhang Yuan were shocked when they heard this, and said in unison: "The child understands." ”

"The so-called law does not hold the people accountable. After two years, the clairvoyant mirror has spread like a microscope, and it is not too late to study it with the general trend. Zhang Dian raised his eyes and looked at the starry night sky, "When the time comes, if there is anything you don't understand in this regard, you can also ask Han Yukun, he has hidden it, and I don't know how many." ”