余承东回应“鸿蒙是安卓套壳”，透露鸿蒙代码 1.3 亿行

Core Viewpoint - Huawei's HarmonyOS has undergone significant investment and development, with a focus on creating a unified operating system for various smart devices, emphasizing its independence from Android and the challenges of ecosystem development [2][3][4]. Group 1: Development and Investment - HarmonyOS has a codebase of 130 million lines, with annual investments exceeding 10,000 personnel and hundreds of billions in research and development over six years [2]. - The majority of the code is developed by Huawei, with some contributions from ecosystem partners after open-sourcing [2]. Group 2: Ecosystem and Application Development - The transition from Android to HarmonyOS involved a dual framework initially, but since HarmonyOS 5.0, applications have been redeveloped specifically for HarmonyOS [3]. - The development of the operating system and its ecosystem is likened to the chicken-and-egg dilemma, where initial user adoption is crucial for attracting developers, despite the challenges of ecosystem migration [4].