Goofs

When Temujin and Borte are fleeing their pursuers, Temujin is shown shooting his bow (in a "Parthian shot" manner) at this pursuers, killing one. In the very next screen shot, Borte and Temujin are shown racing their horses - Temujin's bow is again in its saddle case.

The Mongolian tribes, including the hordes that conquered their vast empire, rode on a very peculiar race of horses, stocky build, with relatively short legs and a large head. The horses used in the movie look like ordinary western horses

Non-Mongolian characters in this movie speak modern standard Mandarin Chinese. This would be incorrect because, this language as the standard Chinese language originates with the Qing Dynasty hundreds of years later, the regions depicted in the movie appear to be central and western China where they would speak a different dialect and several characters speaking Chinese don't appear to be Chinese and all and would most likely be speaking a Turkic dialect.

(at around 18 mins) The dead person with his throat slashed blinks. The dead person being portrayed in this movie is actually alive.