Although it's somewhat uncomfortable to watch, you can really see the dynamics at play by just checking out this two-minute trailer, which has most of the important moments in it, on YouTube:
The Chinese guy is not wrong, unfortunately, in what he says about infrastructure and development. And the adversarial nature of the wider neocolonial relationship is summed up so neatly in just the microcosmic everyday interactions between two men, with their unfiltered discussion of ethnicity in a completely non-Western PC fashion. (FWIW, the African guy gives as good as he gets in parts of the full documentary and the natives are "getting him back", in a sense, by robbing him blind)