五部门发文提出加强信息通信建设，支撑低空基础设施发展

Group 1 - The Chinese government, along with ten agencies including the China Meteorological Administration, has issued a policy document outlining a timeline for the introduction of new standards in the emerging low-altitude economy by 2027 [1][3] - By 2027, the coverage rate of ground mobile communication networks for low-altitude public air routes is expected to reach no less than 90%, with typical low-altitude application scenarios developed for urban governance, logistics, and cultural tourism [1] - The Greater Bay Area, including cities like Guangzhou, Shenzhen, and Hong Kong, is identified as a key testing ground for the low-altitude economy [3] Group 2 - In April 2025, the Shenzhen Meteorological Bureau will establish a center to provide specific weather forecasts for operators of drones and other aircraft [3] - The State Administration for Market Regulation has noted that meteorological services for low-altitude flights have not kept pace with the development of the drone industry, leading to inconsistent and potentially inaccurate weather services, which severely restricts the industry's potential [3] - Urban environments may create unstable weather conditions that affect drone flights, such as the canyon effect caused by dense streets and high-rise buildings, sudden changes in wind direction and speed, and extreme temperatures due to urban heat island effects [3]