This is an exceptionally marvelous film in many respects which one should discover for oneself.
The director was Vsevolod Pudovkin. The actor who plays the heir of Genghis Khan was Valéry Inkijinoff, who was to later perform well as the murderer in the film adaption of the Simenon Maigret thriller, La Tête d'un homme.
I especially enjoyed the film's attention to realistic detail and ethnography.
I note that two other films Pudovkin films of an early trilogy are also available at the Internet Archive: Mother (
https://archive.org/details/Mother_883) and The End of St. Petersburg (
https://archive.org/details/VsevolodPudovkinTheEndOfSt.Petersburg1927) which I will surely watch,