CCP will love this documentary to the max. It give CCP more than what they bargain for. Even mongolia is part of China. (today PRC no longer claim Mongolia but Republic of China or Taiwan still claim Mongolia as part of "One China")
Those were the days when white men talk so beautifully about China. It portrayed chinese civilization as older than Egyptian. Tibet is part of china. China never invaded another nation. But how come today white man claim china has occupied Tibet?