The 4th 2020 World UAV Congress was held in Shenzhen Convention and Exhibition Center from September 13 to 15. The top grade is the agile bee type II UAV carefully designed by Yifei Intelligent Control, which made its debut at the exhibition and made its global debut. "Long endurance, fast flight, comprehensive performance upgrade", this agile bee II grand appearance, for the UAV cluster performance industry ushered in a new "spring".