With the rapid development of clinical medicine, revolutionary changes have taken place in the diagnosis and treatment of many diseases, so patients have received better treatment and recovery. However, there are significant gaps in the popularization of new medical knowledge and technologies due to the differences between regions, economic conditions, and medical environments. CODEX provides clinical researchers with standardized, systematic and sustainable online and offline learning platform for different medical department. At the same time, CODEX also actively promotes international cooperation and exchanges, and invites internationally renowned experts to come to China to participate in academic activities, and build an international cooperation platform for Chinese clinical medical research. Under the background of “collaborative innovation” and the idea of being open, integrated and innovative, we coordinate the use of domestic and foreign medical resources, promote cooperative research between different regions in the field of clinical medicine, and actively promote Chinese clinical workers to participate in international cooperation and researches, improving the international status and influence of Chinese clinical workers.