In genghis Khan's life, he fought countless battles with fewer victories and more victories, and the elimination of Kreb was the most wonderful one. At that time, Genghis Khan only had 4600 cavalry, but why could he destroy the 300,000-strong Kreb?
This is also where historians are fascinated.
Genghis Khan was able to destroy Krebbe, in addition to being bold, which had a lot to do with his wisdom.

After Genghis Khan defeated Zamuhe and eliminated the Tatar and Taichi Ube, his strength was already comparable to that of the powerful Krebu. After the defeat of the army, he defected to Zamuhe under the tent of King Khan of Keliebu, and he very much wanted wang Khan and Genghis Khan, two steppe tigers, to fight, so as to give him the opportunity to make a comeback. Therefore, the relationship between Wang Khan and Genghis Khan was constantly provoked, and eventually, Wang Khan took the lead in provoking war and wanted to eliminate Genghis Khan.
The Krebe attacked Genghis Khan by means of a sneak attack, but fortunately someone sent him a message to be able to deal with it, but it was a retreat.
When Genghis Khan received the news that Wang Khan was going to attack, he was very hasty, and he had no time to organize a large army to resist, and the only way was to retreat to a favorable terrain and then organize a counterattack.
Genghis Khan's retreat was very long, all the way from the Mongolian steppe to hezhen shatuo (present-day north of the Eastern Uzumuqin Banner in Inner Mongolia) next to the Xing'an Mountains before stopping and fighting between the two sides.
In this battle, although the two sides are not divided, Genghis Khan is obviously in a weak position. In order to preserve his strength, Genghis Khan made a wise choice, that is, to retreat again, into the vast primeval forest Xing'an Ridge, to avoid the pursuit of Wang Khan.
However, what Genghis Khan did not expect at all was that many of his men, seeing him retreating constantly, felt that there was no hope of following him, and fled halfway. His younger brother Hesar's family was also captured alive by Wang Khan because he was lost.
At this time, Genghis Khan, there were only 2600 people left, which can be said to be very embarrassing. Originally, I wanted to preserve my strength and look for an opportunity to destroy Krebe, but I didn't expect to suddenly return to the original point of poverty.
However, after all, Wang Khan was soft-hearted, and not only did not execute Hesar, but also did the wrong thing, that is, he wanted to support Hesar as the new khan of the Mongol tribe and use Hesar to eliminate Genghis Khan.
Hesar was also a very clever man, and he took the plan and left his family in Kreb as a hostage, and consulted with Wang Khan to find Genghis Khan and take him to the encirclement of the Kreb army and annihilate him.
Wang Khan also admired Hesar's courage and his righteous act of destroying his relatives, and agreed very happily.
After Hesar found Genghis Khan, the brothers thought of a plan to defeat Kreb, that is, to deceive Wang Khan, saying that genghis Khan could not be found, and Hesar had nowhere to go, so he submitted to Wang Khan, and then another internal and external cooperation, defeating Wang Khan in one fell swoop.
Wang Khan took Hesar's words to heart and set up a feast to welcome hesar's arrival. At this time, Wang Khan listened to Hesar's words and felt that since he could not find Genghis Khan, there were only two possibilities, one was that he had died on the way to escape, and the other was that he had escaped from the grassland.
Whatever was possible, it was no longer a threat to The King Khan, so at the banquet to welcome the return of Hesar, except for his thousands of guards, the army was scattered everywhere to graze, and the base camp was very empty.
But Wang Khan never expected that at this time, Genghis Khan had already had 4600 cavalry through recruitment, which was already a big force. Genghis Khan's army followed Hesar and went all the way to the base camp of Wang Khan, and launched a surprise attack, successfully destroying this powerful tribe that had existed for hundreds of years, and Wang Khan and his son Sangkun were killed by others on the way to escape, so that the Kreb was completely destroyed.
So, how could Genghis Khan's 4,600 cavalry wipe out the 300,000-strong Krebe?
Genghis Khan did not take the means to kill, nor did he have the ability to get rid of the Kreb people, but surrendered.
Surrender is not a foolproof strategy, the demise of the Kreb is a living example, Wang Khan wanted to surrender Hesar, and the result was destroyed. The best way to get the enemy to be used by me sincerely is to marry, and for this reason Genghis Khan married the eldest daughter of The Greater Brother of King Khan, the brother of Wang Khan, and his younger son Tuolei married his second daughter. In addition, some of his generals also married the daughters of other nobles.
Although the population of Krebe was large, most of it was in the hands of some nobles. In this way, Genghis Khan integrated the entire population of the Krebe under his command in just one month and became an important force in the Mongol Legion