September 1 marked the 10th anniversary of the founding of the Trilateral Cooperation Secretariat, an international organization established with a vision to promote peace and common prosperity among China, Japan and the Republic of Korea. Official statistics showed that trade volume between the three countries rose from US$130 billion in 1999 to US$670 billion in 2020 and 30 million mutual visits were made during the period. Total economic output of the three countries accounted for 24 percent of the world in 2020. Trilateral cooperation has been developing smoothly despite the ups and downs of the three bilateral relations, but there remains a long way to go. Trilateral cooperation in the upcoming years will focus on a free trade agreement, scientific innovation and digital transformation for economic recovery and mutual understanding.