In the Qianqiu Hall of Daxing Palace, there is a huge sand table, and the border counties such as the West Sea, Heyuan, and the end are vividly presented in the eyes of everyone.

From north to south, they are Qilian Mountain, Qinghai Plain, Qinghai Nanshan, Dafeichuan, Ozha Mountain, Liangfeichuan, and the southernmost is the Yellow River and Tanggula Mountain, and the passage into the three plains is either a river valley or a gentle area where two mountains meet.

The most critical of the five mountains and three plains is the Dafei River, which is located in the south of Nanshan in Qinghai, east to the Moraine Army, west to the city of Fuluochuan, from which to the west can go to the Qaidam Basin, the Tarim Basin and Khotan, and the northeast direction of the Chiling and the eastern part of the Qinghai Nanshan Mountains junction will go down to the south, from which to the north, is the Qinghai Plain. The road to the south of Dafeichuan is the intersection of the Ozha Mountains and the Dafeiling, and the south can reach the Liangfeichuan, and then to the south is the only way for Tubo to go north - the Yellow River estuary Doma east of Baihai, it can be said that the strategic position of Dafeichuan is important, and it is a well-deserved first. In fact, the Khotanese merchants who entered the Silk Road of the Great Sui Dynasty now took the road of 'Jimo County - Qaidam Basin - Fuluochuan City - Dafeichuan - Xiping County', which is hundreds of miles away compared with the Hexi Corridor.

Since Tuyuhun was defeated and retreated to the south, the strategic priority in the northwest region was changed from Xihai County Dafeichuan to Liangfeichuan in the south, which was also set up by Yang Guang Heyuan County, but until today, Xihai and Heyuan counties are similar to laissez-faire, although there are officials and county soldiers, but they have not been developed under the guidance of the Great Sui Dynasty, and the nomads still live on grazing, which is really unfavorable to the real control of the Great Sui.

Looking at the terrain on the sand table, Yang Tong said: "Judging from the current situation, the poor and weak Tuyuhun will not be far away, if he fights with my Great Sui, he will definitely die, even if he does not fight with my Great Sui, I am afraid that he will be swallowed up by Tubo." In other words, the future enemy in the Xihai region will be the southern enemy such as Tubo, but it is impossible to defend the territory for a long time by relying on the garrison to defend the uninhabited Xihai and Heyuan counties, especially Heyuan County, which has long logistics supply routes and difficult roads along the way, which is not conducive to garrisoning, so I plan to move some people from the counties in the Hexi Corridor to Tuntian, and one is to develop and utilize these areas to make them a real territory that can provide taxes in the territory of the Great Sui; the second is to attract the permanent population to turn nomadism into agriculture and receive cultural education in a unified manner, so as to achieve the purpose of naturalization; The third is to make the border army self-sufficient and reduce the pressure on the imperial court to transport grain from the Yongliang area. At the same time, the construction of beacons in the strategic points of the Heyuan area, and the establishment of a strict beacon management system, to strengthen the defense capability of the border areas, so that the Tibetan generals can no longer lead troops into the country at will, the existence of these fortifications, but also for our army in the sudden outbreak of war, have time to react. ”

Speaking of this, Yang Tong glanced at the courtiers, and then said: "It's just that although it has long been the land of the Great Sui, and the official road has been opened, there are also many problems, not to mention Tubo and Tuyuhun in the south, and even there are local tribes that do not obey the discipline of the imperial court, and the West Sea is better, because of the war horses and salt fields, it is well developed." The source of the river is a strategic point in the region, and the selected officials must not only be proficient in the way of governance, but also be able to resolve ethnic disputes according to national and local conditions, and have excellent legal, military, educational, and other abilities, while the previously appointed Taishou obviously does not have this ability. Du Chuke, I plan to make you the Taishou of Xihai County; Master Li, I plan to let you serve as the Taishou of Heyuan, what do you two think? ”

In fact, the famous general Heizhi Changzhi in history also did it, and he adopted the method of tuntian in Heyuan County to solve the problem of food supply for the Heyuan army, and at the same time, more than 70 beacon towers and garrison points were added. In Heyuan, there are more than 5,000 hectares of tuntian, and more than 5 million stones of grain are harvested every year. In this way, both the logistical supply of the army was solved, and the border security was consolidated.

And Yang Tong learned through the information fed back by Wang Fubao that the people of Xihai and Heyuan were very supportive of the rule of the Great Sui, so there was more naturalization.

The key is that the literati of the Great Sui period are not as good as later generations, they are all models of generals who can level thieves and govern the country with a pen, Li Keshi and Du Chuke are all figures who have entered the phase with military merits in history, and the two should be able to build Xihai and Heyuan into self-sufficient, national peace and security.

Li Keshi and Du Chuke, who were worried that they had no chance, were overjoyed, and at the same time took a step forward, bowed down and said, "Weichen is willing to go." ”

"Okay, that's it." Yang Tong nodded, looked at everyone and smiled, "Is there anything else that needs to be added?" ”

"Holy." Li Keshi arched his hand and said, "Weichen has something to say." ”

"Say it."

"Whoa." Li Keshi said: "There are many people who have fled from Yizhou and Jingbei to Guanzhong, and some of them have not been properly resettled, and these people are easier to convince than the people of Hexi who already have land... Wechen thought that in order to avoid unnecessary disturbances, let these people relocate..."

"The source of the river is bitterly cold, and the people of Jingzhou are afraid that they will not be able to adapt to it and it will be difficult to survive. The climate in the north of Yizhou is not much different, and Wechen thinks that it is more suitable for the people of Yizhou to go. Wei Zheng said at this time: "In addition, we can use more land as a condition to encourage the people of Hexi to relocate." ”

"Quasi-play." Yang Tong looked at Li Keshi and Du Chuke, and said, "Those who are willing to go to the West Sea and Heyuan will double their land." How many people you can convince depends on the ability of the two of you. Don't let me down. ”

"Wechen will never live up to the trust of the Holy God." Li Keshi and Du Chuke replied solemnly.

After Xihai and Heyuan were handed over to Li Keshi and Du Chuke, Yang Tong was also relieved, the skills of these two people were definitely not bad, but Li Jing and Du Ruhui were too sharp, which caused the younger brother to be pressed to the dim starlight. Yang Tong believed that after the arrival of these two people, coupled with the support of the imperial court, they would definitely be able to make a great cause, Yang Tong only had three requirements for them, one was to use razing as much as possible to control razing, and mobilize the local young and strong to quell the reactionary forces that disobeyed the Great Sui; Second, he should develop these two treasures as much as possible, and within two years, he will see that these two counties contribute countless resources to the Great Sui every year, whether it is grain, salt, war horses, special products, or slaves, whatever is beneficial to the Great Sui, Yang Tong needs them all; Second, it is to let the nomadic tribes of the two counties take the land of Tuntian as the center, slowly settle down, unify and educate their children, and finally achieve the goal of speaking Chinese, writing Chinese, learning Chinese etiquette, wearing Hanfu, and being proud of the Great Sui.

If it weren't for the strength of the Great Sui at that time, too few talents, too wide territory, and too many enemies, Yang Tong could only start to govern from the border counties, and appointed Xue Wanshu, who was both civil and military, to govern and Mo County, Liu Daju to govern Shanshan County, Li Keshi to govern Mingyue County, and Meng Xiaomin to govern Yiwu County, and now these four border counties are thriving, and because they are located on the Silk Road, they have become a rich place in the northwest, which makes the people of Xihai and Heyuan envious.