The distributed version of the Yashan Database System, developed independently by the Shenzhen Institute of Computing Sciences, has successfully obtained the “Security and Reliability Evaluation” certification from the China Information Technology Security Evaluation Center. Among the top-rated products in this evaluation batch, it stands out as the sole local database to achieve a full closed-loop of “full-stack independent development, spanning from original theory to core system.” Built on a self-developed kernel and incorporating cluster technology, this system has attained globally leading standards in both original theory and engineering implementation. It not only guarantees highly reliable and stable operation of critical business systems but also inherently supports high-concurrency multi-agent collaboration. By integrating AI-native capabilities into its foundational architecture, it facilitates the operation of ultra-large-scale smart cities. Presently, the system has found extensive application in core business scenarios across domestic and international markets, including the digital transformation of core systems at leading Central Asian banks and essential livelihood infrastructure systems, such as water supply and gas, in Shenzhen.