A mesmerizing display of 1,024 drones took off in choreographic formations on Saturday night in Hefei City, east China's Anhui Province. The aerial show was staged in celebration of an upcoming sci-tech expo scheduled to run from November 2 to 6. As a key part of the 8th World Voice Expo and the iFlytek 1024 Global Developer Festival that kicked off on October 24, the five-day event is expected to demonstrate cutting-edge technological innovations and the latest achievements and applications of AI with enhanced features and expanded scenarios.