After leaving Dasan Pass, after passing Qingzhou, he gradually entered the Lingxia Plain.

During the Sui and Tang Dynasties, the Yellow River had not yet begun to flood on a large scale, and the Yellow River Basin in the north was still a fertile and fertile place.

But there are only two truly rich places in the upper reaches of the Yellow River, one is the Hetao Plain and the other is the Lingxia Plain, which is the Ningxia Plain in later generations.

The saying "The Yangtze River in the Boat" is not just a false reputation. When Xie Yi and others entered the Lingxia Plain, it was the autumn harvest season. It was quite gratifying to see the vast fertile fields on the plain and the already yellow crops.

However, it can be seen that the grain output here is not high. According to Di Zhixun, it is because of climate. There is still water shortage in places far away from the Yellow River, so the crops are growing limited.

But such a harvest is already quite good in the northwest. The people of Lingxia are relatively rich, and the supply of military and military rations stationed in the border can be guaranteed. If the troops and horses are not mobilized on a large scale, military rations can be self-sufficiency to a certain extent.

This is satisfying

Xie Yi couldn't help but think that corn should be planted this year, and potatoes should be the same. When the seeds are sufficient in the future, these relatively dry and barren lands will all come in handy, and grain output should be even greater.

Perhaps by then, the grain output of the Lingxia Plain alone can supply military rations from several prefectures and counties, and maybe it will be done soon.

In any case, corn and potatoes are drought-resistant crops and are the main grain crops in the northwest in later generations. They are known for their high yields and high quality. How can they be an exception in the Tang Dynasty?

In addition to farmland, you can also see some pastures, and herds of cattle and sheep are walking on the grassland where we meet each other, which is quite spectacular. Occasionally, you can meet a few shepherds, but their appearance and outfit are really not satisfactory.

After all, it is close to the northwest grassland, and the Lingxia generation area is considered to be a mixed residence of Hu and Han, with both agricultural civilization and nomadic civilization.

As for this land, which family is strong, it belongs to whom. It has been like this for thousands of years.

During the Qin and Han dynasties, they fought for the Huns, and later occupied by the Xianbei people. In the early years of the Sui Dynasty, they were occupied by the Turks. Now they fell into the hands of the Tang Dynasty. After the late Tang Dynasty, they fell into the hands of the Dangxiang people, and eventually they became a Western Xia Kingdom that dominated the northwest for many years.

Xie Yi is very glad that he lived in such a prosperous period as the Tang Dynasty. Of course, the prosperity of this period also has his own contribution. Isn’t the purpose of Xue Yantuo’s mission to do this?

Walking in the territory of the Tang Dynasty, Xie Yiquan thought it was a vacation and enjoyed the magnificent rivers and mountains of the Tang Dynasty. At this time, the natural conditions in the northwest were quite good, at least not as bad as those in later generations. There were still plants and trees on the mountain, not bare.

If protection begins now, perhaps desertification and soil erosion in the northwest can be effectively controlled, and the ecology can even be gradually restored.

Then the Yellow River floods that were rampant from the Song Dynasty to the Republic of China may be avoided. If they can be promoted, it will be considered a contribution to the benefit of future generations and the nation.

But, it's quite difficult.

First of all, we must ensure that there is less war here and firmly control it in the hands of the Tang Dynasty. Otherwise, how can we protect the reads? My story with the school belle. How can we talk about governance

The border defense in the northwest has been the sorrow of the Central Plains dynasty since ancient times.

Li Shimin proudly declared that the Great Wall was endless, trying to intimidate the northern tribes with his reputation as Tian Khan. This idea is correct. Building the Great Wall was useless to the people and money, and passive defense did not have much effect or significance.

It is true that the country is strong and the army is strong and the power is not afraid to invade this, but the premise is that it will continue to be maintained and there will be a wise king.

But the inheritance of the country, who can guarantee that every generation of heirs is wise and powerful, so this is not a way to maintain long-term stability.

But

How can it be done? This seems to be a bigger problem.

No matter how much you have, this time, you will be successful. Before leaving the Tang Dynasty, you need to visit someone, Li Daozong, the Prince of Jiangxia, when you pass by Lingzhou.

This prince was very famous in later generations about the Sui and Tang dynasties, and was quite villainous. But in fact, this prince was quite loyal.

Li Daozong was also Li Yuan's cousin. He has made many contributions since the rebellion in Jinyang. He was originally named King of Rencheng, but now he has been renamed King of Jiangxia. He is known as "Xian" together with Li Xiaogong, the prince of Hejian. He is one of the few princes in the royal family who can lead troops to fight.

Unlike Li Xiaogong who is good at quelling civil strife, Li Daozong is better at defending foreign enemies.

In the eighth year of Zhenguan, Tuyuhun invaded the Tang Dynasty's borders and threatened the Hexi Corridor. Emperor Taizong of Tang mobilized troops to counterattack, and Li Daozong led his troops to the expedition.

Li Daozong first defeated the enemy with a partial army and defeated the Tuyuhun army, and then followed Hou Junji and other troops to chase and intercept the Tuyuhun army fleeing south from the south.

Marching for more than 2,000 miles in the deserted cold land, catching up with the Khan of Tuyuhun Fuyun in Wuhai, defeating his people, capturing his name Wang Xiaozheng, and causing the Tang army to win a complete victory.

In the eleventh year of Zhenguan, Li Daozong changed his title to Prince of Jiangxia, but he made a small mistake. He was once banned from the mansion because of his corruption and was deprived of his power.

At the beginning of the year, because of the Du Fuwei case, Li Xiaogong, the prince of Hejian, ended up in a mess. After apologizing, he closed his mouth and thought about his mistakes at home. The royal family suddenly lost the great man who held military power, and there was no benefit in the stability of the royal family and the balance of power.

At that time, some people speculated that perhaps His Majesty the Emperor would further reuse King Li Ke of Wu, but in fact, it was not. Instead, Li Daozong, who was confined, was released and stationed in Lingzhou.

His Majesty Li Er's move can be said to be a victory for several virtues in one go. With gratitude, Li Daozong will definitely be grateful and loyal to the emperor. The strength of the royal family was strengthened and the army was balanced. At the same time, there was a safer person looking at Xue Yantuo in the north.

From this we can see that His Majesty Li Er's guard against the Zhenzhu Khan Yi Nan has not been a day or two, and they are all scheming and calculating.

Before leaving Chang'an, he had a secret talk in Chengqing Hall. Li Shimin specifically told him to visit Li Daozong when he passed by Lingzhou.

Of course, it's too necessary.

If Xue Yantuo had some abnormal movements, Li Daozong was the closest military force, and to some extent his own backing would be his hope of saving his life if necessary.

How can you do it if you don’t communicate earlier? Meeting each other, emphasizing the critical situation on the front line, and letting the Prince of Jiangxia prepare early to provide necessary help for himself.

I think Li Daozong should be easy to talk to. After all, Li Xiaogong was unlucky because of himself and thought about his mistakes behind closed doors. Then he naturally made a comeback and was reused again.

Of course, as a famous general in the royal family, Li Daozong's comeback is sooner or later, but because of his own reasons, this opportunity has been advanced.

Just based on this, Li Daozong should thank himself a little. Not to mention repaying the grace of a drop of water, at least you should treat yourself well. It is always necessary to worry about the necessary things.

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Chapter completed!