Speaking of which, Tuolei should be genghis Khan's most appropriate successor to the Khan's throne. Why is Thoray the most appropriate heir?

(Tow Ray Stills)
First, Tuolei was the youngest son of Genghis Khan. According to the tradition of the young Mongol son Shouzao, Tuolei should inherit the Khan's throne and be made the heir to the Khan's throne.
Second, Tuolei was the most capable of fighting among Genghis Khan's concubines. Among Genghis Khan's four concubines, Tuolei had a calm personality and perseverance, and was the most military genius. In the war launched by Genghis Khan to attack the Jin Dynasty, the First Western Expedition and the destruction of Western Xia, Tuolei's military ability was vividly demonstrated, and he was called the "God of War" by the Mongols. Genghis Khan wanted to dominate the world, and it was obviously the most appropriate to find a son with the strongest combat ability to serve as his heir.
Third, tore is deeply supported by the Mongolian people. The reason why Tore is favored is that he has the strongest ability to fight. The person who can fight the most, his prestige is certainly the highest among the Mongols. Second, towing has affinity. When Tore was fighting, like all famous generals, he often distributed the spoils of war to the soldiers, so his affinity was also the strongest.
Fourth, Thore's sons were the most prominent among Genghis Khan's grandchildren. Tuolei's four sons, Möngke, Kublai Khan, Hulagu, and Ali Buge, were all outstanding figures, and later became kings. Generally speaking, when the emperor considers the heir, he will not only think about the son, but also the grandson. And the grandson was also a very important indicator for the emperor to consider the heir. The reason why Sima Yan passed the throne to Sima Zheng, the reason why Kangxi passed the throne to Yongzheng, and the reason why Zhu Yuanzhang passed the throne to Zhu Biao all have the factor of considering Sun Tzu. Since Tuolei's sons were the most prominent of Genghis Khan's grandsons, it was also most appropriate for Genghis Khan to pass the Khan's throne to Tuolei.
(Stills of Genghis Khan)
Since there are such sufficient reasons, why did Genghis Khan not pass the throne to Tuolei in the end, but to Wokoutai instead?
Moreover, Genghis Khan feared that the presence of Tuolei would threaten the stability of wokoutai khan's position, and twice made Tuolei swear allegiance to wokoutai. Once, before Genghis Khan launched the first western expedition, Genghis Khan made his sons (including Tore) swear that they must be loyal to Wokoutai, and as long as Wokoutai has a son who is "greasy and grass-fed", he must pass on the throne. This means that even if Tuolei's son is powerful, the Khan's position must be that of Wokoutai's son. The second time was when Genghis Khan was about to die, he did not call another son, but specially called to tow thunder, so that he would be loyal to Wokoutai no matter what.
Since Genghis Khan had always been worried that Tuolei and his son would be threatened by the Khan position of Wokoutai, why not just pass the Khan position to Tuolei and come to a hundred?
I think that the reason why Genghis Khan did not pass the throne to Tuolei is precisely the most suitable reason for Tuolei to pass the throne, which is inappropriate in Genghis Khan's view. Why?
First, the so-called "young son shou stove", in Genghis Khan's view, only passed on the ancestral inheritance to the young son, not that the Khan position was passed to the young son. In fact, Genghis Khan passed on his ancestral inheritance to Tuolei.
Second, Tore has the strongest combat ability, but he is also too fierce and loves to kill. Although Genghis Khan often launched aggressions, he did not like to kill. Because although the slaughter can get the world, it can't keep the world. Therefore, if the Khan's position had been passed to Tuolei, it is likely that the Mongol Empire would have died out faster.
Third, Tore was deeply loved by the Mongol people, which actually posed a threat to Genghis Khan's own khanhood. Genghis Khan, like other emperors, was worried about this. Therefore, he was reluctant to make Tuolei the heir to the Khan's throne, for fear of posing a threat to himself.
Fourth, Thore's sons were strong, but they were therefore a threat to Genghis Khan's other grandsons. What Genghis Khan hoped for was that his grandsons, his great-grandchildren, his children and grandchildren would be able to rule the world, each hegemon, and the whole world would be a world of only one child. But Genghis Khan was also worried that his children and grandchildren would fight and fight among themselves. If the Khan position is passed to Tuolei and then passed on, the descendants of Tuolei's line will definitely pose a threat to the descendants of other lines. This was the last thing Genghis Khan wanted to see.
That is, based on the above considerations, Genghis Khan did not choose to pass to Tuolei in the end.
(Reference: The Secret History of Mongolia)