Are the Red Chinese encamped just south of the border, or hidden in a Blue city nearby?
Red China owns or controls many ports in South America now. Been acquiring them for for years. Tied to trade deals. Related:
China’s Belt & Road Initiative And South America
https://www.silkroadbriefing.com/news/2019/05/29/chinas-belt-road-initiative-south-america/
Chinese ports and docks in Latin America
https://www.alainet.org/en/articulo/211675