After a night, the wind and snow in the morning stopped, and Liu Zhang and the others rode their horses in the direction of Chang'an.

It was very cold in the morning, Liu Zhang and the others were dressed very tightly, and they wore woolen masks.

There was a thick layer of snow on the ground, and there were few pedestrians on the road.

If the current speed of the horses is followed, they will be able to reach Chang'an in the evening.

At that time, the city gate should have been closed, and Zhang Rang was ordered by the emperor to go out on an errand.

He could get the defenders to open the gates, and they would be able to enter the city without any problems.

They rode to the outside of Chang'an City, and it was almost dark.

The city gate of Chang'an was also closed, and Zhang Rang said a word to the captain guarding the city.

Lieutenant Chang'an asked them to wait outside the city for a while, and he went to inform Lang Zhongling.

Lang Zhongling then reported to the emperor, and if he allowed it, he could open the car door.

Liu Zhang and they waited outside the city for half an hour, and Captain Chang'an walked to the city tower.

Captain Chang'an ordered the city gate to be opened and let them enter the city.

Zhang Rang took out the envoy, and he was carrying out the task assigned by the emperor.

The defenders and captains did not dare to slack off, as long as they checked their identities.

The emperor and Lang Zhong ordered them to enter the city, and Liu Zhang went to see the emperor tomorrow.

Liu Zhengchen took Liu Zhang to visit Princess Pingyang, and by the way, stayed in the princess's mansion for one night.

When they came to Princess Pingyang's Mansion, they saw a few people waiting outside.

Liu Zhang and Liu Zhengchen got out of the rented carriage, and the guards of Princess Pingyang's Mansion saw that someone was coming again.

In the past two days, many people have come to visit Princess Pingyang and Xiahou Po, and they all have something to ask for.

"Please let me know, just say that Liu Zhengchen, the lord of Jiangdu, is visiting, this is Liu Zhang, the red marquis."

Liu Zhengchen explained their identities to the guards of Princess Pingyang's mansion, as long as Princess Pingyang knew that the two of them were coming.

Will definitely see them, Liu Zhengchen noticed that there were quite a few luxurious carriages outside the mansion.

It seems that the status of these people is not low, and they should have been waiting outside for a long time.

The guards of Princess Pingyang's Mansion glanced at Liu Zhengchen and Liu Zhang, and the guards were thinking that the two of them must have come to ask the princess for help.

"We are different from them, you just say that Liu Zhengchen and Liu Zhang came to visit."

After the Mid-Autumn Festival, Princess Pingyang also asked them to visit her mansion early.

The lieutenant of the escort went to report to Princess Pingyang that there were too many dignitaries and dignitaries in the past two days.

There are also many rejections, and Princess Pingyang is the most honorable among many princesses.

She is often rewarded by Liu Che, and she also has a certain amount of power.

So many people asked her for help, which made Princess Pingyang very annoying.

Liu Zhang and Liu Zhengchen waited outside the mansion for a long time, and the escort lieutenant came to them.

"The princess agrees with you, and I will have someone take you there."

At this time, Princess Pingyang has not rested, and she has received many distinguished guests during the day today.

Including the people sent by the emperor, Princess Pingyang was very favored.

The guards brought them to Princess Pingyang, and Liu Zhang looked at Princess Pingyang with a tired face.

Originally, she was going to rest, but she heard that Liu Zhang and Liu Zhengchen were coming to visit.

This made her suddenly refreshed, Princess Pingyang and Liu Zhengchen have always had a good relationship.

The impression of Liu Zhang is also very good, since the Mid-Autumn Festival.

She brought back a lot of good things from the Red Marquis Kingdom, and some of them were given to Cao Xiang.

Cao Xiang likes those novelty things very much, and Liu Zhang doesn't look very good at Princess Pingyang.

"We're really sorry we came to visit so late! I don't look very good, have you ever seen a doctor? ”

Liu Zhang didn't know if Princess Pingyang was sick, and his eyes noticed a teenager.

The young man looked very handsome, this young man was sixteen years old, he was Cao Xiang, the son of Princess Pingyang and Cao Shou.

Cao Xiang is engaged to Princess Wei Liu Ru, and the wedding will be held in two years.

Cao Xiang is two years older than Liu Ru, who is the niece of Princess Pingyang.

Cao Xiang can be civil and martial, and ten years later, Cao Xianghui will die of illness.

He followed Wei Qing to fight against the Huns many times and made a lot of achievements.

Cao Xiang's untimely death may have been wounded during the battle against the Xiongnu, or he was seriously ill.

There is no clear record in history, and Liu Zhang feels that it is a pity.

Cao Xiang doesn't live in Princess Pingyang's mansion most of the time, and Liu Zhang doesn't know what the mother-son relationship between Princess Pingyang and Cao Xiang is?

Liu Zhang learned from his original memories that Princess Pingyang and Xiahou had been married for four years.

The couple had no children, and Liu Zhang guessed that Princess Pingyang's other children had died.

There will be no records in history, and those who record history do not feel the need to waste pen and ink.

Cao Xiang also wanted to meet Liu Zhang, and heard that he could make some novel gadgets.

I was finally able to see Liu Zhang today, and he saw that Liu Zhang was very young.

"There have been a lot of people visiting in the past two days, and I heard that you two are here. I'm more energetic, did I bring anything new this time? ”

Princess Binh Duong is looking forward to it, and she doesn't need anything too valuable.

Liu Zhang came to visit Princess Pingyang and, of course, brought some small gifts.

Liu Zhang had the craftsmen make exquisite women's watches, which took a lot of time.

The craftsmen of the Han Dynasty made some exquisite small objects, which was not too difficult for them.

Liu Zhang took off the backpack he was carrying on his back and took out a beautiful lacquerware wooden box from the backpack.

He prepared a men's watch for Cao Xiang, which could accurately read the time.

"If I'm not mistaken, you should be Pingyang Hou."

Liu Zhang saluted as he faced the direction, and Cao Xiang saluted Liu Zhang in return.

Cao Xiang had been sitting silently as his mother returned from the Red Marquis Kingdom.

often chattered about Liu Zhang, hoping that he would come to visit Princess Pingyang's Mansion as soon as possible.

Cao Xiang also heard about Liu Zhang and felt that he was a wise and brave person.

If you go to the north to fight against the Xiongnu in the future, you will definitely be able to make war achievements.

Cao Xiang followed Wei Qing to fight against the Xiongnu last year and made several military exploits.

Although he did not personally participate in large-scale battles against the Xiongnu, he gave Wei Qing advice many times.

Let the Huns cause a lot of losses, just last summer.

Ambushed the Xiongnu in Dingxiang, Daijun, and Shangjun, and the Han army obtained the greatest results at the lowest cost.

I heard that it was Liu Zhang who provided the news that the Xiongnu would come to these three counties to plunder.

Liu Zhang took out a black lacquerware box, which was a gift for Cao Xiang.

"This is a small gift I specially prepared for you, in the box is a watch that can be used to watch the time"

Liu Zhang also made a compass with his own hands, on which were engraved with eight directions.

Very useful for generals who fight all year round, so that they do not get lost in the steppes and deserts.

Cao Xiang took the black lacquerware wooden box, since it was Liu Zhang's intention.

He accepted it unceremoniously, and he opened the wooden box.

There is a delicate watch in the wooden box, as well as a small silver-white compass.

Cao Xiang saw that the needle of the compass was swinging, and he adjusted the direction slightly.

The pointer will point in that direction, and Cao Xiang thinks it's amazing.

"What is this? Why is it accurate to point the way? ”

"This is the Sinan I made, which direction are you standing in. It will point exactly in that direction, which makes use of the surrounding magnetic field. If the magnetic field around it is too strong, it may fail. ”

Because the strong magnetic field will affect the accuracy of the compass, it is still necessary for Liu Zhang to explain.

In some places, the magnetic field is relatively strong, so tomorrow I will teach him a few more practical ways to identify the direction.

Even without the help of a compass, maybe Cao Xiang knows how to discern the direction.

The most important thing in marching combat is to be able to accurately determine the direction, so as not to get lost and affect the battle plan.

"It's really amazing, I'll give a gift in return another day."

Cao Xiang likes the gift from Liu Zhang very much, and it is indeed very practical.

Cao Xiang looked at his watch again and asked Liu Zhang to introduce how to use it.

Liu Zhang told him the time corresponding to each digital scale, so that he could see the time at any time.

Liu Zhang gave Cao Xiang a mechanical watch, and the time was very accurate.

Liu Zhang did not do this to deliberately curry favor with Princess Pingyang and Cao Xiang.

Bringing a small gift to the door is also a very normal gift exchange.

Although gold and silver were used in the watches, they were not very valuable to them.

Through Liu Zhang's explanation, they understood the timing method of the watch.

They can see the exact time anytime and anywhere, which is so convenient.

Princess Pingyang put on the watch with the help of Liu Zhengchen, and the watch was small but delicate.

Specially made for women, wearing a women's mechanical watch adds a bit of beauty.

It also added a bit of elegance, and Princess Heian smiled happily.

"The watch is beautiful and I love it. If the women in the palace see it, they will definitely want it too. ”

Those women in the palace also like these novelty things, and when the time comes, let's see if Liu Jian can do a few more.

"If you like it, you can know the time when you go out. If they like such watches, let the craftsmen in Chang'an City make them. ”

Liu Zhang also brought some drawings and asked the craftsmen in the city to make them for them.