After broadcasting the ancient times live, I handed the system over to the state.

"If you want to further refine it, you need to add wood ash. The potassium carbonate in the wood ash helps neutralize calcium ions and other ions. These neutralized substances will precipitate and be filtered out. Then, it is evaporated and concentrated again to obtain refined salt."

Where can I buy filter paper to filter my filter?

[Charcoal and silica sand, or maybe linen!]

Add some soy milk while cooking, otherwise the potassium ions won't be removed easily.

[Actually, this method is quite crude.]

……

Some ordinary people shook their heads slightly after hearing this.

It looks simple, but it's not. To simmer it, you need to use firewood.

Firewood wasn't easy to obtain in ancient times. There were trees everywhere, but enough firewood for cooking rice and making salt for your own family was not an option. Getting rich was out of the question.

It wasn't just because there wasn't enough firewood, but also because those who illegally sold salt were to be executed along with their entire families!

Seeing that firewood is needed, some people will calculate the cost of salt, but others will start using their brains to think about whether it is possible to just dry the salt.

The ancients weren't fools. As long as they saw some direction and there were some benefits, they would continue to move in that direction. They just lacked vision, but their creativity was never lacking.

Even modern people find the things created by the ancients to be very advanced and novel.

Even dynasties that already had salt-drying methods in salt fields drew inspiration from the sky to make improvements.

The rulers kept a close eye on the people, and they knew that since the sky had revealed these manufacturing methods, smuggled salt would likely be plentiful for some time.

Zhu Qinggu glanced at it briefly. Modern people don't lack salt, and she never even considered time travel. Traveling to ancient times without cell phones or computers would be a terrible experience.

However, she still saved the video to broaden her knowledge.

Maybe she can watch a few more in the future and then make a special popular science article on time travel?

With a swipe of my finger, the next video immediately appears before my eyes. I've actually watched it many times before, but I still can't help but want to watch it again.

[After watching the UN negotiations video, I realized we were being too conservative in our approach!]

The United Nations? What kind of country is that?

So far, they have learned the names of many countries from the sky, not just China, but also the United States, Britain, France, and so on. They also know that the world is actually a very large place, not just this one piece of land.

Is the United Nations the kind of country that is formed by many countries uniting together to form an alliance?

Some emperors and those who studied the general trend of the world were very interested in this kind of thing.

The first two people to appear are dressed in clothing that does not belong to any particular country or dynasty, yet they vaguely resemble those dynasties.

They learned who the two people were from the comments on the screen: a middle-aged man named Xin Qiwu and a young man named Fan Xian.

Fan Xian cautiously admitted that he didn't know how to negotiate.

"A war of words between two countries is a negotiation; one should be magnanimous!" Xin Qiwu said.

These words resonated deeply with the Song Dynasty officials. This is the magnanimity of a great nation. How could they possibly contend with barbarians? Naturally, they must possess the magnanimity of a superior celestial empire!

Zhao Zhen's brows relaxed slightly; the salt production process he had witnessed earlier had left this official deeply impressed.

Zhao Zhen wanted to see how the current verbal sparring between the two countries differed from the exchanges between the two envoys from the Song Dynasty.

Zhao Zhen was quickly choked by what followed.

Upon the arrival of the Northern Qi envoy, Xin Qiwu smiled slightly, his eyes narrowing completely, and his lips curving to their widest point. He appeared to be smiling, but this smile sent a chill down one's spine.

"The land I, the Lion, have occupied will absolutely not be returned to you!"

Xin Qiwu's refined demeanor instantly changed, becoming confrontational as he angrily waved his sleeves!

The envoy from the Northern Qi, representing the Red Army, solemnly declared, "That is our territory!"

"Want to go back? Send troops to fight me then!" Xin Qiwu arrogantly slapped his own face repeatedly at the person opposite him.

Soon, to Fan Xian's dismay, the two envoys began rolling up their sleeves, slamming their fists on the table, throwing documents at each other, and hurling insults.

The barrage of comments on the screen suddenly became denser.

[Not resorting to violence is considered magnanimity; no one dying is considered politeness, haha.]

[Frontline soldiers fight to the death to gain the upper hand at the negotiating table. How can civilian officials not show some 'great-nation magnanimity' and do justice to the fallen soldiers?]

"Excellent!" This sentence greatly pleased Liu Che, making him feel completely refreshed. Some things are just like that; you have to fight them, fight them so hard they dare not come out, fight them to establish a great reputation, and fight for a future for your descendants!

Emperor Wu of Han (Liu Che) would not allow the Xiongnu horses to trample his vast territory at will; that was the dignity of a nation!

"Good! What the sky says is absolutely right!" Li Shimin slapped the stone pillar next to him. "If we all seek peace, it will only make the wolves tear us apart faster, just like the Jurchens during the Jingkang Incident. Did they ever spare the Song people?"

Zhao Kuangyin also thought it was well said, but when he thought of how the Song Dynasty was called "the Great Song" by later generations, his heart sank. Today, he still felt a wave of dizziness and wanted to whip Zhao Er's corpse!

The key point is that Zhao Kuangyin felt that the Song Dynasty was not just like this. He didn't even want to think about what other dangers awaited him. He thought, "I'm not worried about having too many lice." Zhao Kuangyin felt that he could still hold on a little longer.

Zhao Zhen was indeed taken aback by the reversal of events and coughed several times.

But the words spoken on the sky were so hurtful, every single one seemed to be directed at their Great Song Dynasty.

The military generals of the Song Dynasty were all complacent and the civil officials sought to avoid mistakes rather than achieve merit. Perhaps there were outstanding individuals, courageous and persevering, but none of them could change his mindset as a ruler.

Zhao Zhen wanted to, but he didn't dare.

Who wouldn't want to be as powerful and influential as Emperor Taizong of Tang, leaving a lasting legacy?

However, the Song Dynasty was too large a mess, so large that it could easily be ruined. The description on the screen was that it was barely being patched up, and Zhao Zhen believed that was exactly how it was.

Not only him, but all the envoys who went on missions during the reign of Emperor Renzong had many thoughts after looking at the sky.

Ouyang Xiu served as an envoy to the Liao Dynasty, as did Bao Zheng and Yan Shu.

Their mission achieved certain political objectives, but was it impressive enough?

Each time, he is not as confident as Xin Qiwu on the sky.

A country's confidence in negotiations stems from its military strength, but many intellectuals believe that the dominance of military leaders is not a good thing.

If the military becomes powerful and arrogant, won't the scholars be suppressed?

Now the Zhao family wants to govern the country with the scholar-officials!

Zhao Zhen was not the type of ruler with a strong will. He did not want to be like Zhao Gou and did not want the humiliation of Jingkang. However, when it came to implementing reforms, his indecisive nature made him prone to giving up easily.

So now they can only helplessly watch as the Qing Kingdom in the sky dares to speak so forcefully to the Northern Qi.