In the eleventh month of the lunar calendar, the north wind is bleak, and the winter of Bianliang has arrived. According to the scientific research of later generations, the climate during the Song Dynasty was colder, and it is recorded that even the Taihu Lake in the south of the Yangtze River would freeze, which shows how cold the weather was at that time.

This situation had an important impact on the new Great Song Dynasty, first of all, the most direct was that the north-south artery canal would freeze after winter. Especially after Li Chongjin's rebellion was put down, Huainan's livelihood and economy gradually recovered, and it became an important place for the Great Song Dynasty.

The significance of the canal is even more important, and the dragon boat that Zhao Kuangyin drove back two days ago is still passable. But two days later, after a northerly wind, ice began to appear on the river north of Yingtianfu, and this year's canal freeze period was finally long overdue.

In the months that followed, the millions of military democracy in Bianliang City relied on grain stocks. Once something goes wrong, the canal, a life-saving transportation line, is frozen and closed to navigation, and the consequences are unimaginable.

In this era of extremely underdeveloped transportation, the climate and food problems were enough to make a dynasty crumble. There is no doubt that the Great Song Dynasty, which has been established for less than a year, is still fragile.

This is also the reason why Zhao Kuangyin attaches great importance to the assassination, and the courtiers are extremely sensitive, in such a special period, any small omission may cause extremely tragic consequences. Zhao Kuangyin didn't dare to take it lightly, and the cold arrow assassination case became particularly critical.

In the case of loose on the outside and tight on the inside, all the burden fell on Zhao Zheng. Walking under the palace wall, Zhao Zheng, who subconsciously wrapped his clothes tightly, knew very well that the impact of the climate on the Great Song Dynasty did not stop there?

The climate changes are a series of changes, and Bianliang is inevitably rainy at the same time as it is cold. The Yellow River basin in this era was definitely much wetter than in later generations, which is also the reason why there are many rivers and lakes in Bianliang City and the water system is developed.

This is conducive to Cao Yun, and it is also convenient for the literati of the Great Song Dynasty to enjoy the scenery and recite poems. But at the same time, a large river - the Yellow River - is also affected.

Since the first breach occurred during the Ming Emperor of the Eastern Han Dynasty, the flooding of the Yellow River has become the most troublesome thing in all dynasties. However, the previous dynasties were lucky. After the Five Dynasties and Ten Kingdoms and the Song Dynasty, climate change led to an increase in precipitation in the Yellow River Basin.

The successive dynasties only made minor repairs to the Yellow River, and all the arrears for the flood control of the entire river embankment were lost to the Great Song Dynasty, and they unceremoniously demanded immediate repayment.

The reason why the Song Dynasty fell, it is no exaggeration to say that it was played to death by the Yellow River. Zhao Zheng knew very well in his heart that although it was quite stable at present, if he remembered correctly, in a few years, the flooding of the Yellow River would begin. This matter will inevitably give Zhao Kuangyin a headache. It would also be a disaster for the monarchs of the Great Song Dynasty.

And that's not all, climate change isn't regional, at least in the east of the continent. Temperatures are lower in Bianliang, as well as in further north, where nomads face the same dire conditions.

As temperatures drop, pasture grass is absent or yields are reduced, making it impossible to feed more cattle and sheep. In the cold winter, wind and snow are frequented, and cattle and sheep cannot survive the winter safely. This is relatively low for productivity. Nomads, who rely mainly on animal husbandry, are a terrible disaster.

This is not a problem that can be solved by manpower to resist disasters, and in this era of relying on the weather for food, the only solution is migration. Migrate to the south, where aquatic grasses are more abundant and warmer. So nomads and agrarians inevitably collided.

Historically, whenever the climate turned cold, it was accompanied by nomadic peoples who went south. War was inevitable, and this was a disaster for the Central Plains Dynasty. It even means the death of the country.

The disaster of the Xiongnu in the Qin and Han dynasties, and the tragedy of the five chaotic Chinese in the Northern and Southern Dynasties are unbearable, and the most direct impact on the Great Song Dynasty is the Khitan and the party. and Tibet on the western plateau.

The Khitans established the Liao State, and since Yelu Deguang got the Sixteen Prefectures of Yanyun from the damned Emperor Shi Jingjiao, the national power has become very strong. If it weren't for the rebellion in the country, the Chenqiao Mutiny, and the unstable time of the dynasty change, how could the Khitans let it go?

The Tibetans on the plateau were divided, and some of them gathered in the Yellow River and Huangshui basins, and the northern foothills of the Qilian Mountains and even the Longyou region were their sphere of influence. Shang Boqian is now standing there, eyeing the tiger. The only good thing is that the Dangxiang clan has not yet grown and rebelled.

A few days after the Chen Qiao Mutiny, Li Yiyin announced that he would change his name, because Zhao Kuangyin's father was named Zhao Hongyin, and those who were ministers should avoid the name of Emperor Xuanzu.

The attitude seems to be humble, but the more this is the case, the more likely it is to harbor evil intentions, the Dingyan army has the land of the five states, and it is the most powerful feudal town in the northwest, if it is not controlled, sooner or later it will be the henchman of the Great Song Dynasty. In the first year of Jianlong, Li Jiqian didn't seem to have been born yet, maybe there was still an opportunity.

Otherwise, Zhao Zheng really didn't dare to think about the tragic situation in the middle of the Great Song Dynasty, the rise of Western Xia, and the threat to the northwest. Fortunately, the time is still early, Zhao Kuangyin is also clearly aware of the importance of the northwest, and is now already winning over the Zhejia who are entrenched in Fuzhou, it is said that Fuzhou Jiedu makes Zhe Deyan come to see the emperor in the spring of the next year, which is a good thing, and I hope that it will be too late.

It is precisely because of this that Bianliang needs a stable environment even more, in addition to the superficial articles of Kaifeng Mansion Yin, Zhao Zheng, the imperial city envoy, is really not light.

After getting clues from the assassin's corpse, Zhao Zheng took Li Yuan into immediate action, first going to the Privy Council. With the help of Zhao Pu, the newly transferred privy deputy, the secret investigation has begun. It's just that it's a long time, and there was a change of dynasty in the middle, and it's definitely not easy to find out the old people and stacked weapons, and it's not bad to have results within two or three days.

Therefore, Zhao Zheng had no choice but to focus his investigation on silk and the dyeing workshop, and the craftsmen of the palace Shangyi Bureau had already seen that the assassin's green camouflage coat was made of silk, and it was very likely that the silk came from Huainan. Could it really be the remnants of Li Chongjin's rebellion against the party?

Zhao Zheng shook his head slightly, not knowing if it was a coincidence, or if the main messenger behind the scenes did it on purpose. But this means of diverting attention is not clever, how can you believe it lightly?

Silk is the key, dyes are also the key, when the craftsman of the Shangyi Bureau high-speed Zhao Zheng, the dark green dye comes from a special plant in Qizhou - after the sprig is frozen green, Zhao Zheng will smile, after all, the clue is still in the territory of the Great Song Dynasty, and the charm is in Bianliang City.

Zhao Zheng also had an intuition, this was the beginning, and this group of ghosts in the shadows would still make waves. Isn't the cold winter coming, isn't it the peak season for gods and ghosts? (To be continued......)

PS: I was out on business, and the trip took longer than expected, so I had no choice but to delay it for a few more days. I was going to fully resume the update in November, but now it seems that it needs to be delayed, and today it will be more and more first, and everyone will see. I'm sorry, I'm really helpless, I hope to finish my work and go back!