Zhang Yin's debriefing was a great success, and those who picked his nose and eyes at him had nothing to say in front of these detailed and credible evidence, Zhang Yin had no obstacle to taking the post of Taiyuan General Army, but Yang Yiqing, who was instructed by Duan Fei, was stunned to find an excuse that everything was busy and the handover was cumbersome, and Shengsheng blocked the appointment, but these excuses could only block it for three or five days at most, and Zhang Yin was not anxious and disappointed because of this.

After the dispersal of the dynasty, Duan Fei ordered Jiang Hui to call Zhang Yin to him and asked him how he felt, Zhang Yin smiled very freely: "Lord Yang has too much misunderstanding about the lower officials, it will be fine after a long time, and the lower officials don't dare to have the slightest resentment." ”

Duan Fei shook his head and smiled: "You are wrong, Yang Yiqing feels good about you, but you took a wrong step at the beginning, you shouldn't take Guo Xun's path, if you came out of my door early in the morning, with Yang Yiqing's current attitude towards me, he will not be so forced, you see, today he will send someone to invite me to come to the house to discuss your matter, I will persuade him to change his mind, but the delay of three or two days is a foregone conclusion, you stay in the capital, don't cause anything, I will ensure that you get the appointment letter and return to Taiyuan within five days." ”

Zhang Yin gratefully saluted: "Thank you for your support, although Yang Yiqing is a high-ranking and powerful minister, he is an old minister of the Three Dynasties, but with his current status, he should personally go to the adult's mansion to discuss with the adult, right?" Is this old man really confused or fake! ”

Duan Fei said with a smile: "Give the old man a face, as long as he can cooperate, don't get in the way everywhere, everything is easy to say, it's still early today, if you have nothing to do, it is better to go to Jinyiwei with the official, the official will take you to see the firearms workshop, and give you a trial of firearms, don't use firearms in the future." ”

Zhang Yin was overjoyed and said: "This is very good, I have nothing to do, and I have ......been looking forward to those firearms for a long time."

Duan Fei took Zhang Yin to Jinyiwei Beizhen Fusi, and directly took him to the research institute at the back, after Zhang Yin personally tested the power of muskets and grenades, he was full of praise for these two things, and was also very interested in other projects that Jinyiwei was researching, Duan Fei took him around, only to see Zhang Yin's eyes shining, and the greed in his eyes could hardly be hidden.

Duan Fei made a lot of promises to him that he would never keep, and then took him back to his study, Duan Fei took out a box from the drawer, handed it to Zhang Yin, and said, "Lord Zhang, since you love the musket so much, this official will give you one, take care of it and don't show it easily, because the Demon Sect has coveted it for a long time." ”

Zhang Yin took the box with a flattered look and said gratefully: "Thank you, for your kindness." ”

Zhang Yin impatiently opened the box, a black oil shining metallic pistol appeared in front of him, Zhang Yin took out the pistol and looked left and right, his nose smelled a very choking smell, he soon found that the smell came from a bottle of oil in the box, Duan Fei explained that the general oil is not suitable for wiping and protecting the musket, Jinyiwei Research Institute has developed this new type of gun polishing, although the taste is strange, but it can protect the musket in actual combat, so that it can be fired nearly twice as many times as many times, Therefore, every gun must have this kind of gun polish in use.

Zhang Yin suddenly put away the musket, Duan Fei took down a large roll of paper from the bookshelf, spread it out and looked at it, only to find that it was actually a map.

Zhang Yin hurriedly glanced at the contents of the map in the process of helping Duan Fei spread out the map, and his heart was shocked again, although the drawing method of the map was the first time he had seen it, but he keenly felt that this kind of map drawing method was much more advanced than the method used to drawing in the past, even if ordinary people got this map, they could see it clearly, this kind of map drawing method is simply a treasure.

The place names marked on the map also made Zhang Yin's heart tremble, he saw the Hanhai, saw the Kent Khan Mountain, saw the Jinshan Mountain Range, saw the Buriyati, this is the place controlled by the Tatars and even the Tile Thorns, when he was young, he had to travel outside the Saiwai to increase his knowledge, and his understanding of the mountains and rivers outside the Saiwai was much clearer than that of ordinary people, and he immediately understood the accuracy of the map, Zhang Yin immediately understood, and the Duan Lord in front of him was really far-sighted and had the world in mind!

Duan Fei flattened the four corners of the map with paperweights and other objects, beckoned Zhang Yin to his side, and said with a smile: "Yesterday I heard you point out the country, and the official was deeply inspired, but unfortunately there was no map yesterday, and the official didn't hear it very clearly. ”

Zhang Yin looked at the map in front of him, and then looked back at the other maps piled up on the bookshelf, he exclaimed: "My lord, has Jinyiwei used this new drawing method to draw the entire land of the Ming Dynasty?" ”

Duan Fei said with a smile: "After several years of hard work, it is finally completed, but there is only one copy of the thing, and a copy has not been copied and released for the time being, so there is no way to send you a copy." ”

Zhang Yin turned his head and said with a smile: "Lord Duan is really painstaking and lonely, the lower officials are so impressed that they throw themselves to the ground, just the drawing method of this map is precious, not to mention that he has also drawn a map of the whole world, Lord Duan's move has a far-reaching impact, it is really a credit to the community!" ”

Zhang Yin didn't talk nonsense, he sighed and immediately pointed to the bend of the Yellow River, and said: "Since ancient times, there has been a folk proverb that 'the Yellow River is harmful, and only one set of riches' ......"

The Hetao area refers to the bend of the Yellow River and its surrounding basins, and the Hetao is a military important place in the southern part of the ancient Chinese country. The Yellow River becomes a big bend through this, and the Qin and Han Dynasty call Henan; Since the Ming Dynasty built the Great Wall of Yulin, it was called Hetao.

The Hetao area has been inhabited by many ethnic groups since ancient times. Warring States belongs to Zhao. Qin belongs to Jiuyuan, Beidi and other counties. Han belongs to Shuofang, Wuyuan, Xihe and other counties. The Western Jin Dynasty was the land of Qianghu. During the Eastern Jin Dynasty, the Xiongnu founded the country according to this, called Xia. Tang belongs to the Kannai Road. Most of the Northern Song Dynasty was the Henan region of Western Xia. At the beginning of the Ming Dynasty, it belonged to the Shaanxi political envoys, and later it was based on the Tatars.

The Hetao is surrounded by the Yellow River on the west, north and east. Yinshan lies in the north of the Yellow River, and its valleys are mostly important passages between the north and south of the ancient desert. Helan Mountain towers in the west of the Yellow River, Luya Mountain barrier is in the east of the Yellow River, and is adjacent to the Northern Shaanxi Plateau in the south. The situation is dangerous. The set is the Ordos Plateau, the surface is undulating, the middle is high, and the surrounding is low. The Yellow River in the territory of the Yellow River, the flow of water is stable, the land on both sides of the bank is fertile, can be cultivated and pastured, and there is a saying in history that "the Yellow River is harmful, but only one set of riches".

The Hetao has been a battleground for soldiers since ancient times, and if the forces in the Central Plains lose the Hetao, they will be constantly harassed by the nomads in the north and occupy the Hetao, and the Central Plains will be able to get the opportunity for stability and development, and many famous names have been left in this rich land......

Zhao Wulingwang, Meng Tian, Wei Qing, Huo Quzhi, Li Jing...... In addition to these famous figures, more people in this land to spill blood, leaving a lot of singing and crying stories, in order to protect the family and defend the country, now the Ming Dynasty has a prosperous phase, in order to prevent Tatar invasion from time to time, the restoration of the Hetao is already an imminent matter!