Yu Wenshu returned to the big tent and immediately asked people to find the concubine Yu Wenshi and discuss. Yu Wenshi and is the third son of Yu Wenshu, who looks like a talent, dragon eyebrows and phoenix eyes, so he is deeply loved by Emperor Yang Guang of the Sui Dynasty, and married his daughter Princess Nanyang to him, worshipping Ma Duwei. As soon as Yu Wenshi heard this, he concluded that what Yang Chong said was true, and who were the two elder brothers, Yu Wenshi knew it, so he asked Yu Wenshu: "Father, what should I do now?" ”

Yu Wenshu said in a low voice: "You now start to investigate Hua Ji, Zhi and his subordinates, you must find out all the goods exchanges, quantity, who you contact, the route you take, and the things you sign, all of which must not be missed, I will personally talk to these two brutes." ”

Yuwen made it clear that this was the biggest risk he had encountered since he entered the center, and once he was used by his opponent, it would make Emperor Yang Guang of Sui's trust and confidence in himself disappear. Yuwenshu's family's original surname is Po Yetou, and their ancestors changed their surname to Yuwen with their masters, so they have always been discriminated against in the Yuwen family, even if Yuwenshu's father Yuwensheng was in the Shangzhu Kingdom because of his military exploits in the Northern Zhou Dynasty. Now Yuwenshu is a unique figure whether it is in the clan or in the center of the imperial court, and it comes completely from the trust and power given by Emperor Yang of Sui.

After Yu Wenhua and Yu Wenzhi came, they were scolded by Yu Wenshu for splitting their heads and covering their faces, and the two were not convinced at first, and when Yuwen Shu asked if they had participated in the iron trade, the two of them immediately did not squeak. After a while, Yu Wenhua said: "I just want to save some expenses for my family and let the people below get some benefits, so I agreed with them to do some ironware business." ”

Yu Wen said who he was, he expected that it would never be so simple, and asked repeatedly, Yu Wenhua and the two of them spit out the truth little by little, sometimes in order not to give money, the two of them wrote a note to the iron factory to get the goods, and also opened a note for passing and exiting the customs. Yu Wenshu immediately ordered that Yu Wenshi and the whole family's subordinates and slaves and maids should conduct a secret investigation, and as long as the goods were out of the customs, they must find out the reason; Yu Wenshu hurried to meet Yang Guang.

Yu Wenshi and the horse, the tent is not far from Emperor Yang of Sui; Yu Wenhua and the servant Shaoqing, in charge of the chariot and the order of the stable, the general Huang, the stable, the herd, the four departments of the Chefu and the supervisors and pastors, are on the emperor's left and right. The two were successively found by Yuwenshu, Emperor Yang of Sui had already gotten the news, and after listening to Yuwenshu's surrender kneeling on the ground, Yang Guang's face was extremely gloomy, and there was a tingling in his heart, and there was a deep sense of frustration.

Yu Wenshu is his first confidant, and he has followed him since Jiangdu and made great contributions to his ascension to the throne; He is not thin on the Yuwen family, the holy family is long, it can be said that he is full of ministers, Yu Wenhua and the crime again and again and again, he is waiting for the limelight to pass and restart. is such a family, for the sake of petty profits, will violate the bottom line of the country and my Yang Guang, then the Guanlong nobles and the wealthy families with the five surnames and Qiwang will not take the court seriously.

It took Yang Guang a long time to calm down, let Yuwenshu get up first, and summoned Yang Xiong, the king of Guan, and Yu Shiji, the doctor of Guanglu; After Yu Shiji asked Yu Wenshu in detail, he was overjoyed and said: "Holy Lord, this is the same thing as what Duhu usurped, the opportunity has come." ”

Yu Shiji was helping Yu Wenshu turn around, and Emperor Yang Guang of Sui said, "Let's hear it." ”

Yu Shiji took a step forward and said: "Yang Chong once suggested that Duhu usurp to spy on Shi Shu Hu Xi's whereabouts, we thought that Yang Chong was afraid that Shi Shu Hu Xi would cause trouble in Chang'an, but now it has a deep meaning. Shi Shu Hu confessed that he went to Gao Gong's house and He Ruobi's house, and today Duhu usurped Yang Chong's guess, why did Yang Chong guess, because Yang Chong was from the perspective of an informant under Gao Gong and others. ”

A mess was found by Yu Shiji, and Emperor Yang Guang of Sui and the other three immediately realized what Yu Shiji was going to do, Yu Shiji was going to set up a bureau and wait for some people to jump in; Yang Guang waved his hand and motioned for the three of them to go out to discuss, he was the son of the day and would not participate in these conspiracy. The three of them found Duhu Usurance, and finally came up with a plan, Duhu Usur first notified Zhou Qian of Chang'an to protect Shi Shu Huxi, and he must ask what the conspiracy is; The rest depends on the results of the investigation, and then the recruitment is dismantled.

Yuwenshi and his family's investigation did not end until Yulin, and at least more than twenty carts of iron from Yuwen's family were transported to the Eastern Turkic Banner, and some of Yuwen's notes and Yuwen Zhihe were probably in the hands of the Turks. Yang Xiong and Yu Shiji watched the fire, not possible, but certain, when they learned that there were still three cars to trade this time, Yu Shiji immediately asked Duhu to arrange for someone to intercept them halfway, and replaced all the people of the Yuwen family with officers led by the prince guard.

Yang Chong, who had dug out this secret, seemed to have been forgotten, and followed Duan Wenzhen in the military department, looking at the boring map every day, the scale of the map of the military department was about 1/180,000, and the basic items of modern topographic maps such as mountains, rivers, residential areas, and roads were drawn on the map. The branches of the water system stretch out naturally, the residential areas are graded and displayed, the mountain range drawing method adopts the mountain line method and combines fish scale and column symbols to represent the extension range of the mountain and the peaks and peaks that stand on the flat ground, and the garrison situation is painted in black, red and blue.

However, in the eyes of Yang Chong, a modern person, such a map is still a lot worse, lacking a sense of perspective, and many materials cannot be reflected on the map. Just like Yulin City, it was originally Yulinsai, Qin unified China, chased the Xiongnu in the north, and after recovering the Hetao area, many elm trees were planted here, and the name of Yulinsai came from this. In the Sui Dynasty, the Great Wall was built with Yulinsai as the center, and Yulinsai was also expanded into a city, and now Yulin City is connected to the Great Wall in the east, surrounds the Red Mountain, controls the throat of the north and south, locks the key mouth of the Great Wall, and stands on the edge of the Mu Us Desert.

There are no descriptions of the Mu Us Desert and the sides of the Great Wall, so the map is more like a travel map for marching and fighting. Yang Chong thought of another possibility, the side plug was not shown on the map, maybe it was for the convenience of smuggling, a small road, maybe there was infinite profit. Yang Chong asked this question tentatively, and Duan Wenzhen said indifferently: "If there are no these tips, who is willing to be a border army." ”

Yes, Duan Wenzhen is right, the same bowl of rice for the army, the conditions of the border army are too far from the border troops in the mainland, if there is no proper entry, don't talk about those soldiers, even the border generals who hold heavy power, and a few can stay long. Yang Chong disagreed, people's desires are endless, indulging the border generals will only make their ambitions inflated, and the end of the Sui Dynasty was in chaos, and the border generals became kings one after another; During the Xuanzong period of the Tang Dynasty, An Lushan and Shi Siming even wanted to seize Li Tang Jiangshan when their strength was enough.