Genghis Khan was not a conqueror in his mind. Instead, the whole world's population was simply tresspassing on what was rightfully promised to him.
"It seems the Chinese Communists finally learned the lesson: what is the oppressive power of secret police, camps and Red Guards destroying ancient monuments, compared to the power of unbridled capitalism to undermine all traditional social relations?"
China still struggles with integrating their minority populations. For the last half century, the CCP has been trying to convert the Cantonese-speaking regions to Mandarin, without much success.
Mao Zedong himself speak Mandarin with a strong accent judging from the recording of the fouding ceremony of PRC