Shenzhen is now home of some major Chinese tech giants including Tencent, Huawei and DJI. It's also the first city that has seen full-scale coverage of the 5G network, which enables it to accelerate industrial development such as 5G-powered smart ports and logistics. Its proximity to Hong Kong also gives Shenzhen an unprecedented edge in attracting international talents and gaining access to global capital. (Photos: Li Hao/GT)