Being an emperor is not something he can do, so he can only rely on his connections.

This is the second day since Zhang Jingwei traveled through time.

Not only does he not have a golden finger like the protagonists in those time-travel novels, he also does not have any memories of the original owner.

When I feel like smoking, I write a few words with a brush in the yard.

But this didn't kill the time at all, and he finally realized how long a day could go without a cell phone.

……

Feeling bored in the yard, Zhang Jingwei planned to go out for a walk, but he was stopped by two strong servants as soon as he stepped out of the gate.

Without giving him a chance to explain, he was taken back.

"Is there any more royal law?"

"Are there still laws?"

"Such a handsome and honest citizen has been imprisoned in this shabby yard by you!"

Even though he yelled at the top of his lungs, the people outside the yard pretended not to hear him.

At noon, Huangfu Ling actually arranged for someone to deliver lunch.

Zhang Jingwei learned that "water clock" had already appeared in this era.

In order to have a good sense of time, he asked Zhang Liu to go out and buy one, and also buy a general history and some books to relieve boredom.

……

Zhang Liu was very efficient and returned in just two cups of tea.

But there is no trace of the "water clock".

Zhang Jingwei frowned and looked at Zhang Liu, who was holding a pile of books in his left hand and a big rooster in his right hand.

"Where is the clock?" Zhang Jingwei asked.

"Master, don't worry. The clock is still being proofread. Someone will deliver it soon. I also got a chicken to crow." Zhang Liu wiped the sweat from his forehead, took two deep breaths, and replied.

Ancient water clocks required the shadow of a sundial to be calibrated.

In some film and television dramas, the water clock is presented in a very simple way.

The principle is not complicated, it is nothing more than dripping water to measure time.

But the dripping water can be divided into two types.

One type of water clock is a water-filled container with a dropper at the bottom and a scale at the top. As the water drips, the scale sinks with the water level. Therefore, this type of water clock is also called a "clepsydra."

The other type is a water clock, which is a clepsydra that drips water into another empty pot. There is also a float in the empty pot that rises with the water level.

However, this kind of water clock in ancient times had certain errors.

Moreover, the sundial used for calibration will also be affected by weather or season, so in ancient times there was a profession called astronomer, who adjusted the direction and position of the sundial by observing the stars.

……

Probably another hour passed.

Four strong men carried a huge stepped iron frame into the yard.

The first step is 1 meter high, while the other two steps are the same, only 80 centimeters.

Then two people in groups brought in four copper pots, one large and three small.

Put the largest one on top.

There is a floating ruler at the bottom. This copper pot is relatively high. There is an inverted U-shaped tube under the mouth of the pot with one side inside and the other side outside.

There is a dropper under each copper pot and a small hole on top for collecting water, with a stopper hanging next to the hole.

As a science and engineering man, Zhang Jingwei quickly analyzed what these copper pots were used for.

The one at the bottom is a water container and a clepsydra for measuring time.

The kettle on the second step is used to drip water into the receiving kettle.

The two kettles above are used to ensure the water drip flow rate.

The coolest thing is this inverted U-tube. If the water is full, it will use the siphon principle to quickly drain the water in the kettle.

This has become semi-automatic.

After the installation was completed, a strong man asked Zhang Jingwei for a drink of water.

Taking this opportunity, Zhang Jingwei also tried to get close to them.

"Thank you for your hard work, brothers. How old are you this year, eldest brother?"

Several strong men were stunned for a moment.

The burly man who was asking for water spoke first: "Master, don't you recognize me? I'm Dong Dazhuang, and we were all former guards at the Zhang Mansion."

Another strong man sighed, "Alas, after the master's accident, we can only work as laborers in the market."

The burly man named "Da Zhuang" patted Zhang Jingwei's shoulder and said nervously, "Master, everyone in the city said you committed suicide by taking poison. Now that we see you're okay, we're relieved."

"I did commit suicide by taking poison."

After Zhang Jingwei finished speaking, the four of them looked at him in unison.

"Fortunately, my father blessed me in the afterlife, allowing me to survive again. But I don't remember many things about the past, as I have completely lost my memory. I didn't recognize you, so I hope you can bear with me." After saying that, Zhang Jingwei bent down and bowed to several people.

Dong Dazhuang immediately stepped forward to help him up, shaking his head and saying in panic: "Master, this gift is too much. I am just a servant and cannot accept your gift."

Zhang Jingwei took out a few pieces of silver from his purse and handed them to a few people.

Seeing this, several people pushed their hands away and refused.

"The shopkeeper at Zhonghang will pay us wages, but we don't want them."

When they saw that the former housekeeper Zhang Liu was now dressed in rags, they knew that the young master was not living well.

The master usually treats them well, so why would he accept money from the young master at this time?

"Just take it if I tell you to. Why are you so hesitant? It's not free. You have to do something for me."

After pushing the mill twice, Dazhuang and others finally accepted it.

"Spread the news 'I'm still alive but I've lost my memory' throughout the city. The more people who know, the better."

Without asking any further questions, they just agreed and left in a hurry.

There are 12 hours from Zi to Hai, and each hour has two moments, "Chu" and "Zheng", and each moment has four small moments.

"Rat, Ox, Tiger, Rabbit..." Zhang Jingwei carried a table of the twelve zodiac animals on his back.

"One quarter past three, 1:15 pm, haha." After successfully reading the time, he laughed happily twice.

This may be the first thing that makes me happy since coming to this world.

……

It's time to study.

Zhang Jingwei looked through the general history and found that the civilization system was roughly the same as the medieval system, and it also experienced slavery, feudalism, and imperial dictatorship.

Only the names of dynasties, kings and regions are different.

According to deduction, the current "Heavenly Kingdom" should be a unified empire divided, much like the late Eastern Han Dynasty. However, the current situation of the northern land being worried about losing is very similar to the late Tang Dynasty and the Southern Song Dynasty.

Culturally speaking, people from the Central Plains are Han people.

The Narong people may be Mongolians.

The four great inventions were created.

There are also military strategies.

Salt! Mineral salt was first discovered in the early days of the Celestial Empire.

The barbarians in the south and the foreign countries in the west have not yet been integrated.

The prefecture-county system, the imperial examination system, military households, slavery...

Wonderful, so wonderful, like a novel, a person of engineering major can be so fascinated by history!

This era cannot be called a prosperous one, but it is not as plagued by internal and external troubles as the last dynasty.

At least it is still the situation where all nations come to pay tribute.

But...looking at the imperial examination, the time for the provincial examination is approaching.

There are still a few months left and the registration period has not yet passed.

To be honest, when I encountered the imperial examination level in some development games before, I had to look up the strategy guide.

Will the real imperial examination be the same as the college entrance examination?

So he turned around and asked Zhang Liu who was standing beside him.

"It's a good thing that the young master wants to take the imperial examination, but with his current status, he may not even be qualified to take the examination. The Zhang family will be charged with treason."

Zhang Jingwei was very disappointed to receive such an answer.

Zhang Liu noticed the disappointed expression and consoled him, "I heard the Marquis will be back soon. Let him think of a solution then. Perhaps there's still a chance."

Zhang Jingwei's expression became even more intense.

"It's boring. Isn't the purpose of taking the imperial examination to become an official? Huangfu Ling's father is such a high-ranking official. Wouldn't it be uncomfortable for her to just lie down under him?" When he said this, he naturally brought out his "bad outlook on life" in the workplace.

Zhang Liu retorted, "The Marquis isn't actually a high-ranking official. He's a fifth-rank garrison general. Before he was made a marquis, he was only a captain. Furthermore, he's only a Guanhou, the lowest rank of marquis."

Zhang Jingwei was shocked. In his mind, Huangfu Changshui must be a high-ranking official. He didn't expect that after being granted the title of marquis, he was still a fifth-rank general.

A sense of guilt started to grow in him: "Ah? Then I'm a burden."