I found this link
http://www.nytimes.com/interactive/2015/07/24/business/international/the-world-according-to-china-investment-maps.html?_r=1
It is also interactive.
Can I know what lib they are using?
Looking at the Javascript assets, it looks like it's loading d3.js and topojson. The map itself is an SVG, so likely generated using D3.