Whether a country's smelting technology is strong or not is directly related to whether the country's armor is sharp enough and whether the machinery and equipment are durable.

Smelting technology often symbolizes a country's science and technology, and it is the most important event. Smelting technology has also been continuously improved by outstanding figures due to social progress and social needs. From the original Bronze Age to the Iron Age, and from the Iron Age to the Steel Age.

After the development of block smelting, 100 steel smelting, and frying steel, the smelting technology has evolved into a more sophisticated steel filling method in the Northern and Southern Dynasties, which has greatly increased the output of steel to meet the needs of the time and the needs of the society.

By the Tang Dynasty, steel had become widely popular. Most blacksmiths were able to master the technique of steel filling, which made the output of steel increase proudly, but the new smelting method has not been innovated, and the steel filling method improved by Qi Wuhuaiwen of the Northern Qi Dynasty is still used.

Because of the chaos at the end of the Sui Dynasty in the early Tang Dynasty, the population decreased sharply, and the output of ferrophonic was not as good as before, and the steel smelting technology was not improved, and the supply of steel was somewhat in short supply. In particular, Li Shimin is ambitious and has the ambition of the Qin Emperor and the Han Dynasty, and he can't do it without excellent weapons and armor forged from steel. Most of the steel in the Tang Dynasty was used in the Tang knife to enhance the combat effectiveness of the Tang army, but there were not many that really popularized the people.

If the smelting technology can be improved again, the steel output can be greatly increased under the limited iron and steel output, which will be able to manufacture a lot of good steel weapons for Datang, and at the same time, it can also benefit the people, so that steel can bring convenience to the people's life and improve the quality of all aspects.

This technological revolution. It is a good thing for the benefit of the country and the people!

Facing the news brought by the eldest grandson Wuji, Li Shimin stood up movingly: "Great, auxiliary." Who is this craftsman and whose surname is it? I was anxious to meet him, and when he arrived in Chang'an, he immediately brought him to see me. I'm going to meet ...... in person."

"Yes!" The eldest grandson Wuji responded first, and then said: "The craftsman is a native of Ezhou, Jingnan, surnamed Yang Mingyan, and he is a local blacksmith. Ancestral craftsmanship has been passed down from generation to generation for hundreds of years. He brings together the experience of his ancestors. Improved smelting technology. The Ezhou Assassin knew about this, and the Ministry of Officials recommended him to enter the court. This was two years ago, when the Ministry of Rites Shangshu felt that the other party could not read a few vulgar characters, and vetoed the mention of yì. The minister also discovered it while sorting out old official documents. Specially sent people to Ezhou to investigate. After making sure that the matter was true, he returned to His Majesty. ”

"Damn! Yang Gongren is stubborn and ignorant, he really deserves to be killed! Li Shimin was so angry that he scolded, and finally calmed down and said: "I also have to be careful with the auxiliary machine, otherwise my Datang will definitely miss a big talent." Send more men to guard you, so that you don't have to leave the pool. By the way, let the post houses along the way be well entertained and treated as a three-grade official. ”

For talent. Li Shimin has never cared about anything outside his body.

The eldest grandson Wuji bowed his head to express his understanding.

"Recently, there have been a lot of envoys from neighboring countries in our Tang Dynasty, and there will be a shortage of manpower in the Ministry of Rites and Foreign Affairs. Appropriate job transfers can be made to avoid unnecessary recruitment. I'll be in charge of this, I'm not worried about Pei Lian, Xiao Yu is too rigid, and she is not as tactful as you. Li Shimin carefully instructed that since the Tang Dynasty exterminated the Turks, its international status in Asia has not been what it used to be. No one dares to underestimate the rising Tang Dynasty, and the alien races who came to congratulate the new emperor of the Tang Dynasty on his accession to the throne can be said to have come one after another. In particular, the various tribes of the grassland once again jointly recommended the trusted Tang Emperor as the Tian Khan, and interfered in the internal affairs of the grassland tribe in the name of the Tian Khan.

The eldest grandson Wuji happily accepted the order again.

**********

Luo Shixin has a very tight grasp of the affairs of the Criminal Department, he hates corrupt officials and corrupt officials, and he will never tolerate corrupt officials and corrupt officials, especially the kind of corrupt officials who bully the people.

With the matter of layoffs, he provoked the style of officials at all levels of the Criminal Department to do practical things, and changed the atmosphere in Chang'an.

Under the watchful eye of the criminal department like a vicious dog, the crime rate has been greatly reduced.

There are fewer and fewer things to do in hand.

Luo Shixin's character is afraid of trouble, and he can lift his spirits in the face of heavy incidents, but in the face of miscellaneous matters, he lacks the patience to deal with them one by one, so he lost it to Ma Zhou and Liu Yanke, and let them deal with it and give him a look.

I slept in the criminal department for an afternoon, and then I returned to the mansion weakly: I slept enough, but I had a feeling of not being awake and dizzy.

When he returned to the mansion, he knocked on the door, and when he saw that it was Luo Shixin's porter, he immediately reported: "My lord, an old friend named Li Yuncong has come to look for you, and Fu Bo is accompanying him to talk in the reception room. ”

Generally, people with status and status, they look at their own homes very closely. Don't let people in, if you have something to find, first submit the post, if the host agrees, notify the concierge and let the guests in. Luo Shixin was very disgusted with this kind of rule, and gave a special order. But anyone who looks for him, regardless of their status or status, will be welcomed into the living room for tea. It's not that there is a lack of this tea money, why turn people away?

If you can't find an old friend who has been visiting for many years, or some heroic figure, wouldn't it chill people's hearts to turn them away?

Even if there is a person who fishes in troubled waters, but he has the courage to touch this fish in the muddy waters of his Luo Shixin's house, he also has a certain amount of courage, so what does it matter if he is greeted by him?

Because of this, Luo Shixin's name of hospitality is also famous in Chang'an.

Therefore, even if Luo Shixin and Pingyang are not in the house, and there are guests coming, the steward of Luo Mansion is still very enthusiastic to introduce them into the reception room for hospitality.

When Luo Shixin heard that it was Li Yuncong, he laughed and strode towards the living room.

Walking into the living room, Li Yuncong was sitting stiffly, opposite him and above Pei Qingyi and Zheng Liwan were Pei Qingyi and Zheng Liwan.

This Luo Shixin and Pingyang went out on business, and Zheng Liwan and Pei Qingyi were left in the house. One of them strokes the piano, one dances the sword, the sound of the piano is superior, and the sword dance is unrivaled in the world, and they are also tired of it.

I heard that there were guests coming, Zheng Liwan originally just wanted to say hello a little, Pei Qingyi and Luo Shixin went to Changbai Mountain to find Sun Simiao to save Pingyang, and they had contact with Li Yuncong, so they can be regarded as old friends. Jianghu people are very open-minded in making friends, and they also go together, pulling each other around, and Zheng Liwan is not easy to leave here.

This is hard for Li Yuncong, talking to the two bright and beautiful beauties, he didn't dare to move recklessly, and he didn't dare to raise his eyelids, and he was relieved to see Luo Shixin coming.

"Brother Yun Cong, it's been a long time!" Luo Shixin kindly stepped forward and gave him a tiger hug.

In recent years, there has been civil strife in Goguryeo, and the internal struggle between the powerful minister Yuan Gai Suwen and the king of Goguryeo Rongliu has been fierce, and he has no intention of taking care of Zuo Tiancheng and his group of Sui Dynasty "remnants" on Changbai Mountain. As half of the masters of Changbai Mountain, the ginseng, mink, deer antler, Ganoderma lucidum and other treasured medicinal materials and leather in their hands are all sought-after goods in the Central Plains.

This kind of huge wealth, even if Goguryeo stipulated that they were not allowed to trade with Zuo Tiancheng, there were still countless merchants who dared to take risks.

Li Yuncong has been dealing with visitors and medicinal herb merchants who travel between the north and the south all the year round on Changbai Mountain, and from time to time he will ask about the weather of the Central Plains. They are familiar with only Luo Shixin in the entire Tang Dynasty, and they should be based on his news. Luo Shixin is now famous in the north and south, as long as you inquire a little, you can know his current situation.

Li Yuncong saw that Luo Shixin had such an identity and status, and he was still the same as before, without any style, he was very impressed, and hugged him enthusiastically: "I have been hunting in the mountains all these years and have encountered a huge white bear. It's much bigger than the one you went up to fight, and I've kept it for you. ”

"That's great!" Luo Shixin beckoned him to sit down, and said happily: "If you have the opportunity, you will definitely go to Changbai Mountain again, when you hear this news, your hand is itchy." ”

Zheng Liwan and Pei Qingyi saw that Luo Shixin had arrived, and they no longer accompanied each other, and gave the space to their pair of big men.

Seeing the two leave, Luo Shixin smiled and said, "It's rare for you to come to Chang'an, don't be in a hurry to leave." I'll take you around and introduce a few friends to meet you. It's rare to see each other, so you have to have a good drink. As he spoke, he called his subordinates and asked him to bring good wine and food.

Seeing that Luo Shixin was so enthusiastic, Li Yuncong hurriedly said: "I came to Chang'an, I have a heavy burden on my shoulders. I will drink wine with you, but not in excess, and I will have to shoulder the burden of protecting the princess of Silla when I return. ”

Luo Shixin looked at Li Yuncong in astonishment.

Li Yuncong said: "When we rescued Uncle Zuo, the two princesses of Silla also helped us, and the two sides had contacts. At that time, Brother Shixin killed the Goguryeo military god Eulji Wendeok, which angered the Goguryeo people. In a fit of rage, King Yeongliu of Goguryeo blockaded Changbai Mountain, intending to incite the people of Goguryeo to avenge their god of war. At that time, the people of Goguryeo were surging, and our life on the mountain was not easy. It was Silla who supported us and helped us through this difficult time. My uncle knew that they were asking for a favor in return. But at that time, we had no choice. We have been getting along with each other quite happily over the years, and now they have asked us to help them escort them out of Goguryeo safely and send them to Chang'an to meet them, and we naturally can't refuse. ”

Luo Shixin was far away in the Central Plains, and he didn't know the situation of the three northeastern countries, so he couldn't help but be curious: "As the second largest power in the Northeast, Silla is the second largest country in the Northeast, and I need your escort to see you here?" ”

Li Yuncong shook his head and said: "This is Brother Shixin's ignorance, Silla has not had a good time these years." The Tang Dynasty rose in the Central Plains, and its power was even greater than that of the Sui Dynasty in the past. Goguryeo had already made up its intention to defend Liaodong, changing its strategy and no longer expanding westward, but competing with Silla for the Han River. And Baekje, who has always been in peace, was not willing to be lonely, and formed an alliance with Goguryeo to deal with Silla together, even in the southeast wind of Baekje, the Yamato island country also sent troops to help Baekje attack Silla, Silla can be said to be attacked in many places, and the road to Datang was almost blocked. (To be continued......)

PS: There is only one change when the Lantern Festival goes out today, and it will be made up tomorrow!