China's influence over Latin America has come under scrutiny in recent years. What has China been doing in this part of the world? The Belo Monte project is the longest and largest ultra-high voltage power transmission system in the world. It stretches over 2,500 kilometers and transmits electricity from the hydro-rich northern Brazil to the south where most Brazilians live. It powers 70% of the residents in Rio de Janeiro region. How was this accomplished? How come so far no other country can deliver such an ultra-high voltage project but a Chinese-Brazilian partnership?