About 240 high-ranking government officials and business leaders of Korea and Japan shared ways to boost bilateral cooperation, Tuesday, for Korea's bid to host World Expo 2030 in Busan, according to the trade ministry.The Ministry of Trade, Industry and Energy said that the two sides discussed ways for Korea to help Japan successfully organize the World Expo 2025 in Osaka, and for Japan to help Korea win the right to host the World Expo 2030 in Busan.The face-to-face two-day event was resumed after four years off due to the COVID-19 pandemic.