They were the first South Korea - China prime ministerial talks in three years.<br />The officials touched on one of the most urgent regional issues: fine dust.<br />Lee Nak-yon... and Premier Li Keqiang talked on the sidelines of the annual (boe-oww)Boao Forum for Asia on Wednesday.<br />Seoul's PM proposed strengthening cooperation by expanding ties in joint research programs and measures of early warning systems to tackle the issue.<br />He also requested closer partnership between the two sides on joint research over the exact cause of the pollutant and devising countermeasures together. <br />
