With the advancement of technology and accumulated experience, the field of cardiology has been flourishing. From November 30th to December 3rd, 2023, the 15th Summit on Left Main and Coronary Artery Bifurcation Lesions (CBS2023) will once again present an exciting academic feast for domestic and international colleagues. Prior to the conference, Professor Zhang Junjie, the host of the Complex Coronary Artery Disease Intervention Forum and from the First Hospital of Nanjing, shared the design highlights of the traditional forum, focusing on optimizing the treatment of left main coronary artery lesions. From an international perspective, the forum will present the latest advancements in the interventional treatment of complex coronary artery lesions, combining academic lectures with live surgeries, and integrating theory with practice for attending physicians.