This is equivalent to Israel moving its capital from Tel Aviv to Jerusalem:
The release of this story should be enough for China to nuke the site. But instead the "New Chinese" are currently calling for nuking Japan. (I hardly need to remind the Mongols have been invading China over and over again for millennia (hence the need for the Great Wall) whereas Japan and China had friendly relations for millennia until Japan absorbed Western thought during the Meiji Restoration.) How is reviving Karakorum not far worse than visiting the Yasukuni Shrine? Yet the "New Chinese" will only complain about the latter.
They can't stop tweeting about Nanking, but never once mention how many Chinese the Mongols killed,
**** and enslaved during the Mongol invasion. Why not? (Hint: on average, Mongols are taller whereas Japanese are shorter; see also:
https://trueleft.createaforum.com/ancient-world/re-turanian-diffusion/msg945/#msg945 )
Casualties and losses
Very heavy
In 1273, Fancheng capitulated, the Mongols putting the entire population to death by sword
Resistance continued, resulting in Bayan's massacre of the inhabitants of Changzhou in 1275 and mass suicide of the defenders at Changsha in January 1276.
The Song dynasty elite were unwilling to submit to Mongol rule, and opted for death by suicide. The Song councilor Lu Xiufu, who had been tasked with holding the child-emperor Zhao Bing of the Song in his arms during the battle, also elected to join the Song leaders in death. It is uncertain whether he or others decided that the young Emperor should die as well. In any event, the councilor jumped into the sea, still holding the child in his arms. Tens of thousands of Song officials and women also threw themselves into the sea and drowned.
Another (perhaps?) possible reason why "New Chinese" never complain about the Mongol invasion:
Southern Song Chinese troops who defected and surrendered to the Mongols were granted Korean women as wives by the Mongols, whom the Mongols earlier took during their invasion of Korea as war booty.[38]

Descriptive excerpts about the Mongol invasions from The Lightning and the Sun:
The Mongols, says Harold Lamb, “led out the people of
walled towns, examining then carefully and ordering the skilled workers —
who would be useful — to move apart. Then the soldiers went through the
ranks of helpless human beings, killing methodically with their swords and
hand axes — as harvesters would go through a field of standing wheat. They
took the wailing women by the hair, bending forwards their heads, to sever
the spine more easily. They slaughtered with blows on the bead men who
resisted weakly.”4 It is said that about nine million people were thus put to
the sword
...
even if the figures were to be brought down to their half, still they would
suggest a magnitude of slaughter unprecedented in history.
It is noticeable that material signs of power, wealth or culture —
strong walls, works of irrigation, libraries; — for which the conquerors had
no use, were no more respected than human life
...
As we have seen, in all the conqueror’s
campaigns, cities that had, to any extent, resisted the Mongols, had been
destroyed, and the greater part of their inhabitants put to the sword. But the
blood of the Golden Family, even though it were shed through the veins of
one single individual, was still more precious, in Genghis Khan’s eyes, than
that of any number of Mongol soldiers, and cried for a greater vengeance.
The old Khakhan, therefore, commanded that all living creatures — people
without the customary discrimination between the useful and the useless;
beasts; and the very birds of the air, — be killed to the last
Woke comments from the video link:
Genghis Khan is a mass murderer whose Mongolia people praise him like a hero is ridiculous
That clown actually has a picture of Genghis Khan on his wall, like what
They are really obsessed with their ancestors war crimes
Moving the capital back will make this move as a attempt to glorify the Mongol empire's war crime.
Why does Mongolia get away with celebrating the Mongol Empire? Even amongst the ranks of Empires, the Mongols were utter brutal and heartless. They should be making amends to the nations surrounding them that they brutalised, not celebrating it.
Mongolia is the country equivalent of "peaking in high school"
Imagine they were school shooter and killed one third of the school.
In the past, after all those conquests, instead of moving their people to the lands with good soils for farming, they chose to to conquest further