In the upper reaches of the Irtysh River, it is bounded by the Altai Mountains trending from northwest to southeast. To the southwest is the traditional pastoral areas of the four tribes of the Oirat. The vast area across the Altai Mountains in the northeast is the territory of the three Zasaktu and Tushetu departments of the three right-wing departments of Outer Khalkha in Mobei Mongolia.

The Mobei Mongols and the Moxi Mongols were feuds, and the feud between the two sides began in the civil war between Kublai Khan and his brother Ali Buge for the throne of the Mongol Empire. The ancestors of Oirat supported Ali Buge, while the Mongols of Mobei supported Kublai Khan, so they fought endlessly all year round.

Even after the fall of the Yuan Dynasty, the war between the two sides never subsided. And just a few years ago, the three Right Wing of Transkhalkha once again launched a war against the Oirat Mongols, which has not subsided to this day.

In fact, it stands to reason that after the destruction of the Siberian Khanate by the Russians in 1598, the threat of Russian colonists from the West had already affected the two Mongol tribes. Regardless of whether it is the Oirat Mongols or the three right-wing tribes of Transkhalkha, most of the herdsmen in the tribe at this time also believe in the Yellow Religion. Relations between the two sides should not have been so radical because of a common external enemy and a common faith.

However, the pressure of survival made the two tribes not only unable to reconcile, but caused the two sides to break out again in a tribal war over water, grass and pastureland. People of this era do not know what the Xiaoice River period is, but the Trans-Khalkha Department located in the Mobei steppe can personally experience this cruel natural climate change.

The cold winds from Siberia moved south earlier and earlier every year, and they were unable to store enough forage for their livestock to survive the winter, nor could they keep their livestock warm, which made the Mongol tribes in Mobei the first to encounter an existential crisis.

In the middle and upper reaches of the Irtysh River, where Oirat Mongolia is located, because of the Altai Mountains' blocking of the Siberian cold winds, life is much stronger than that of Mobei Mongolia. In order for the ethnic group to survive, advancing along the Irtysh River and seizing the grazing land of Oirat Mongolia naturally became the choice of the three right wings of Transkhalkha.

This kind of war based on the survival of the tribes is difficult to reconcile, either the three tribes of the right wing of Transkhalkha use the war to consume the tribal population to the amount that the steppe can bear, or they take from the Oirat Mongol tribes enough pastures to allow themselves to survive the winter.

However, God still gave a hope to the Mobei Mongolian tribes, since the new emperor of the Ming Dynasty ascended the throne and reopened the foreign trade of the northwest frontier, the Ming merchants brought various materials from the interior, especially tea, sugar and cotton cloth, to the Mobei tribes to survive the winter.

Livestock that were unable to overwinter could now be slaughtered and broken down into jerky and leather to be sold to the Ming people, reducing the pressure on overwintering forage stockpiles. And Mobei Mongolia can even take the goods of the Ming people and resell them to the forest savages in the north and those Russians, as a one-time and two-way dealer.

The opening of the trade route allowed the three right-wing tribes of Transkhalkha to find another way to survive, which also made their war with the Oirats Mongols begin to ease.

And for the Oirat Mongols at this time, the difficulties they faced did not have to be much better than that of Mobei Mongols. Oirat is dominated by the four tribes of Dzungaria, Heshute, Dulbert, and Turghut, as well as some small tribes such as Huite.

Although the leader of the four Oirat tribes is now the Heshute department, the Dzungar department is on the rise. In the year when Chongzhen ascended the throne, the patriarch of the Turhut tribe and Orlek, under the persecution of the Dzungar tribe, led his troops to the west in a fit of anger and went to the steppe in the far west, and since then they have cut off contact with the other three tribes.

The grazing lands of the Turks were directly facing the middle reaches of the Irtysh River, and they had been fighting against the Russian invasion along the Irtysh since the fall of the Siberian Khanate. The departure of the Turks opened the way for the Russians to Central Asia and the Western Regions.

Batur Huntaiji of the Dzungar Tribe, although he had only just led his tribe to rise up on the North Tianshan Road, wanted to replace the Heshute Department as the lord of Oirat. But the Dzungar Ministry does not have so many people to fill the void left by the departure of the Turghut Ministry.

To the west of the Oirat Mongols, there was a Kazakh Khanate that was also hostile to the Oirat Mongols. Although the Kazakh Khanate was founded by the Jochi Sultans Kereh Khan and Janibek Khan, the enmity between the Golden Family and the Oirat Mongols, coupled with the fact that the Kazakh Khanate had been converted to *, made it difficult for the two sides to coexist.

To the south of the Oirat Mongol Domain, the Yarkand Khanate, under the leadership of Khan Abdul Kerim, occupied the eastern regions of Turpan and Hami, completed the unification of southern Xinjiang, and seemed to have a tendency to re-emerge.

Looking around in this way, the Oirat Mongol Department is not only surrounded by enemies on all sides, but also has internal competition between the Dzungar Department and the Heshute Department, and the situation can be described as precarious.

However, at this moment, a religious war broke out between the three divisions of the right wing of Transkhalkha and the left wing of the Khtutaiji, and although the defeat was undisputed, he did not accept the result of this defeat, but went to Monan to introduce the Chahars into the dispute between the Mongol tribes in Mobei.

Although Lin Dan Khan was tied everywhere in the face of the Later Jin, he was still a respected Mongolian Khan in the Mongolian steppe. Although the strength of the three divisions of the right wing of Transkhalkha was not weaker than that of the combined forces of Choktu Taiji and Lin Dan Khan, Austria should now be called Choktu Khan.

Lin Dan Khan personally led the army to fight against the three divisions of the right wing of Transkhalkha, which naturally made the troops of the Transkhalkha department have no intention of fighting and have been defeated repeatedly. If it weren't for the protection of their Yellow Religion beliefs, the Third Department of the Right Wing of Transkhalkha would have been unable to deal with Lin Dan Khan for a long time.

The three Taiji of the right wing of Transkhalkha, headed by Tushetu Khan Gombdorji, finally proposed a truce and peace to Kushi Khan, the leader of the Oirat Alliance. For Gu Shi Khan, who is suffering from internal and external troubles, this is really a suggestion that cannot be sought.

In order to break the plight of the Oirat Mongols being attacked on all sides, Gushi Khan even sent people to Ufa last year to negotiate with the Russians, hoping that the other side would restrain the behavior of those Russian adventurers.

Now being able to make peace with Mobei Mongolia is undoubtedly an enemy for the Oirat tribes. What's more, after the Ming State subdued the right-wing Mongol tribes in Monan, he pacified the Qinghai Tumut tribe and other Mongolian tribes in the name of the Shunyi King of the Tumut tribe, so that the Ming soldiers entered the Qinghai region bloodlessly and opened up the passage into Tibet.

Qinghai and Tibet have long been seen by Gu Shi Khan, Tibet is the source of Mongolian faith, and if you control it, you can control the Mongolian tribes. Qinghai water and grass abundance can be placed in the Heshute Department, and can also take advantage of the geographical advantage of the border with the interior to obtain tea, salt, cotton cloth and other living materials from the hands of the Ming people, and this place can echo with the Moxi grassland, posing a threat to the Yarkand Khanate on the southern Tianshan Road.

It's just that Gu Shi Khan didn't expect that just one step late, Qinghai's geographical advantage had already been seized by the Ming people. He was also extremely anxious about this situation, but he was stumped by the three Right Wing Divisions of Transkhalkha and could not make any reaction.

It was also when he and Tushetu Khan and other right-wing tribes of Transkhalkha called off their troops and made peace, Sonam Qunpei and Lobsang Chokyi Gyaltsen sent a letter to him, asking him to lead troops into Tibet to protect the Dharma.

As Lobsang Chokyi Gyaltsen politely refused Chongzhen's invitation to the fifth* to enter Beijing, the Ming merchants who had entered Tibet began to come into contact with the Tibetan government of the first Tibetan pa Karma Dan Wangpo. Although the 27-year-old Karma Dan Wangpo cannot be compared with his father, he is still a middle-aged man.

With the support of the ministers Gangsu Nai and Dronir Banggongwa and other Dazhong Kol, he has almost completely controlled the front and back of the house. The court established in Kasanzhuzi (present-day Katse) was also regarded as the most outstanding city in Tibet at this time.

However, it is a pity that the legal system comes from the edict of the Jingtai Emperor Yinxiepa Karma Tan Wangbo is not willing to bow to the lord of China. Just as he was reluctant to share power with the Gelug sect to rule Tibet, he was equally reluctant to admit that the Ming Emperor was able to interfere in Tibetan affairs.

Even fearing that these Ming people would have contact with the Gelug sect, Karma Dan Wangpo forbade Ming caravans to Lhasa. At the same time, he actively contacted Baili Tusi and Lin Dan Khan in an attempt to establish an anti-yellow alliance to completely eliminate the Gelugpa monasteries and monks in Tibet.

Under such a crisis, Sonam Qunpei and Lobsang Chokyi Gyaltsen had to ask Gushi Khan to lead his troops south to Tibet as soon as possible to protect the Dharma. After analyzing the situation, Gu Shi Khan went to talk with Tushetu Khan Gombuldorji and other Taiji who supported the Yellow Sect, and learned that they were planning to ask the Ming Emperor for help to stop Lin Dan Khan and Qiuktu Khan from attacking them, so he couldn't help but dissuade them.

Gu Shi Khan said to them: "Last year, the Ming Emperor met with Lin Dan Khan and Qiuketu Khan in Zhangjiakou, if it wasn't for the tacit acquiescence of Lin Dan Khan and Qiuketu Khan's attack on the Mongol tribes in Mobei, how could Lin Dan Khan dare to give up his nest and send troops easily?" Everyone asks for help from the Ming Emperor, isn't it a wounded sheep asking the tiger for help..."

Although some Taiji believe that since the Ming Emperor can protect the right-wing tribes of Southern Mongolia, he may not be able to protect them. However, most of Taiji, including Tushetu Khan, were worried by what Gushi Khan said.

So he was asked what to do now. Gu Shihan said without hesitation: "Now the only one who can help you is the Houjin Kingdom. I heard that the whole country of Houjin respects the Huangjiao lamas very much, and they have a grudge against the Ming and Chahar tribes, so why don't you go to Houjin for help..."

It was precisely because of Gushi Khan's remarks that Tushetu Khan and others finally decided to ask for help from the Houjin State.

And Gushi Khan not only won the favor of the three Taiji of Transkhalkha again, but also left a good impression on Huang Taiji's side without any effort.

As for Gu Shi Khan himself, he hoped to shift the Ming Dynasty's attention to the east, so that he could act smoothly in Qinghai and Tibet.

Huang Taiji didn't care that Gushi Khan wanted to take advantage of Houjin, and the behavior of the three right-wing departments of Transkhalkha allowed him to find a potential ally. Although it seems that the strength of this ally is not large, if it can be used to deepen the influence of Houjin into Mobei, then it will form a large encirclement of the Monan region.

Moreover, it seems easier to defeat Lin Dan Khan on the Mobei grassland, so there is no need to worry about Lin Dan Khan escaping into the Ming Dynasty.