At an internal reporting meeting at the beginning of 2018, a technical director from Huawei North Research Institute brought Ren Zhengfei, the founder, a topic he had prepared for a week, which also planted the seeds for the birth of the "Hongmeng" system. At that time, Huawei's mobile phone shipments had reached 150 million units worldwide and its domestic share exceeded 30%. It was also the same year that Yu Chengdong, the head of Huawei's terminal, called out that Huawei's mobile phone would surpass Apple's in three years and Samsung's in five years. From the external perspective, Huawei's mobile phones are gaining momentum and enjoy unlimited popularity. However, Huawei's internal senior management team has begun to think about a new question: Is there any hidden danger in the business that cannot be seen by everyone under the rapid business growth? What should Huawei prepare in advance for this? It is against this background that Hongmeng was "quickly" approved, and in May of that year, it was invested by the Investment Review Committee of Huawei Consumer Business Division, becoming a "secret weapon" for terminal business after mobile phones enter the stock market in the future. Although the development rhythm of Hongmeng changed later due to external reasons, HarmonyOS became the earliest operating system of Chinese mobile phone manufacturers in the field of Internet of Things in the competition of mobile ecology. Since 2019, with the deepening of Huawei's software system layout, domestic enterprises including Glory, OPPO, vivo and Xiaomi have also chosen to invest heavily in the underlying software technologies such as operating systems and middleware. In addition to mobile phone manufacturers, the reporter found in the interview that enterprises, including operators and household appliance manufacturers, have also begun to participate in the battle of operating system ecology. From the perspective of the industry, this is not a competition aimed at eroding Apple's iOS and Android, but a time competition on how to quickly establish the voice of Chinese manufacturers in the field of software ecology and let more developers participate in the new ecological environment of multi terminal integration. "If the PC era has made Microsoft a success, and the mobile era has made Apple and Google a success, then in the next AI era of the Internet of Everything, there will also be a large number of intelligent terminals that need to be equipped with operating systems, which will be several times or even tens of times the size of current mobile phones." In the 2022 Research Report on China's Operating System Development, Yiou Think Tank estimated that the growth rate of the domestic operating system general market would exceed 20% and reach 3.41 billion yuan in 2024. The IoT market behind it will even reach the trillion scale level. More importantly, in the era of the Internet of Things, the industry needs more open and compatible operating systems as the underlying infrastructure under the "smart connection", which is not the "war" of Hongmeng family, driven by the demand for multiple complex scenes, including automobiles, agriculture, transportation, smart home, etc. With the help of OS, the project of "cross-border" Hongmeng for domestic mobile phones immediately aroused the vigilance of the same industry. Almost at the same time, domestic mobile phone manufacturers began to invest heavily in software systems, and gradually expanded their "territory" in smart ecosystems such as smart home, smart car navigation, the Internet of Things, and the Internet of Vehicles with the help of operating systems. Taking the automobile field as an example, Glory has started to cooperate with BYD in the field of automobile and motorcycle. Meizu