The 13th China-Northeast Asia Expo with the theme of "Together with Northeast Asia and Seek New Development" opened in Changchun City, Jilin Province. As the only national comprehensive expo in the world with the participation of China, Russia, Japan, South Korea, North Korea and Mongolia, the Northeast Asia Expo continues to highlight regional cooperation in Northeast Asia, pay more attention to scientific and technological innovation and high-quality development, and promote the construction of an open economic circle by building a high-level dialogue platform.