The reason why Galdan failed and passed away with his unfinished dream of becoming the king of the prairie was because the diplomatic environment of the Jungar tribe at that time was too complicated and difficult for anyone to deal with.

Geldan is the son of the great Khan of the Jungar tribe. He was originally sent to Tubo to study Tibetan Buddhism. Later, a power dispute occurred within the Jungar tribe. After he returned to secular life, he returned to the tribe. He eliminated his political opponents one by one and took the position of the Great Khan.

At this time, Galdan also wanted to be the king who unified the grasslands like Genghis Khan. But times have changed. At this time, Tsarist Russia in the north was already very powerful. Galdan adopted a confrontational policy against Tsarist Russia in the early days. Later, due to excessive diplomatic and military pressure, he turned to move closer to Russia. This change also caused the Jungar tribe to give up the opportunity to develop westward.

The embarrassing thing is that there is also a powerful empire in the East, which is the Qing Empire that is gaining momentum. When Galdan first became the Great Khan, he actively improved relations with the Qing government and repeatedly sent missions to visit the Qing Dynasty in order to get the Qing government to recognize his status as the Great Khan of the Jungar tribe.

Later, everyone knew that the Qing government implemented a policy of isolation from the country, not only sealing off the coast, but also prohibiting land trade. The Qing government restricted trade with the Jungar tribe, which angered Galdan, and relations between the two sides deteriorated rapidly.

As fate would have it, Galdan faced a prosperous Qing dynasty. At this time, the Eight Banners cavalry were brave and good at fighting, and their combat effectiveness had not been weakened by corruption. The Qing army even had advanced artillery. In the thirty-fifth year of Kangxi's reign, Emperor Kangxi led a personal expedition and attacked Galdan with three armies. After a fierce battle, the main force of Galdan's army was annihilated.

At this time, many tribes in the Western Regions who were oppressed by the Jungar tribe united to rebel against Galdan. The house was leaking but it was raining continuously, the boat was broken and there was a strong wind. With powerful enemies on the border, Galdan was betrayed by his relatives and betrayed by Tsarist Russia. The Russian government refused to admit Galdan into the country.

The desperate Galdan died of illness in the 36th year of Kangxi's reign, and his children surrendered to the Qing government. Galdan passed away with his unfinished dream of the grassland.