Aerial photo taken on February 25 shows the a cluster of office buildings in the Optics Valley Central City, which is located in the East Lake High-tech Development Zone in Wuhan, capital of Hubei Province. At present, the Optics Valley Central City has gathered more than 50 science and technology innovation headquarter enterprises, including nine regional headquarters of the world's top 500 companies such as Tencent, Xiaomi, Honeywell, and more than 20 headquarters and functional headquarters of listed companies such as Hikvision, Huakang Medical, and Helens. (Photo: Hubei Daily/Wei Lai)