Core Insights - Huawei's Developer Conference 2025 (HDC 2025) showcased significant advancements in the HarmonyOS ecosystem, highlighting over 9,000 applications and more than 70 system-level innovations achieved through collaborative efforts [1] - The introduction of HarmonyOS 6 Developer Beta aims to enhance developer efficiency through a dual-engine approach of "one development, multi-end deployment" and AI-assisted development [1] Group 1: Development Efficiency - The "one development, multi-end deployment" concept revolutionizes application development, allowing developers to use a single technology stack for multiple platforms, achieving a code reuse rate of up to 90% [3] - Applications with identical functionalities across devices, such as Qingting FM, achieved a code reuse rate exceeding 80%, with specific adaptations requiring minimal development time [5] - Applications with partial functional differences, like Feishu and Bilibili, saw a code reuse rate of 50%-80%, significantly reducing development costs for new terminal adaptations [5] Group 2: Innovation and Experience - Developers can quickly implement innovative experiences, as demonstrated by Bilibili's immersive viewing features on new devices with minimal code [7] - The introduction of DevEco CodeGenie, an AI-powered assistant, enhances productivity in coding tasks, with notable improvements in code adoption rates and UI generation efficiency [9] Group 3: Ecosystem Collaboration - Over the past six months, more than 30 partners have collaborated on over 50 projects, fostering a "positive cycle" of ecosystem development [11] - Joint projects with partners like WeChat and Douyin have led to significant performance improvements in application components, such as a fourfold increase in image loading performance [13][15] - The collaborative efforts have resulted in tools that enhance performance, stability, and flexibility, benefiting developers and users alike [15]