China is not yet an economic behemoth in ASEAN, given that it’s s more of a trade power than a major foreign investor in the region. But the day may not be so far away when ASEAN countries find China’s clout to be much bigger – and a more potent geopolitical tool in areas like the South China Sea disputes – if they do not diversify their economic ties, writes Johanna Son for the Reporting ASEAN series.