5G is already in use in some parts of China. But where in Beijing has it been rolled out? And since 4G is already fast, do we really need the next generation of mobile broadband? At the Beijing Expo 2019, visitors can appreciate a world of exotic plants as well as cutting-edge technology. The whole venue is covered with 5G signal provided by China's three major telecommunications companies. For questioners and curious minds, it's an opportunity to test the different applications of 5G and see for themselves what the buzz is all about.