April 15, 2017, "Good sister free wind" concert in Luoyang Stadium, the audience up to 15,000 people, to support the concert security work, Henan Province, Luoyang Public Security Bureau deployed more than 3,000 security police forces, In the security protection process, LinkAV high-definition unmanned aerial vehicles wireless transmission system equipment to perform security tasks, through the multi-channel video terminal to build broadband wireless transmission channel to achieve open space linkage, rapid response, joint action, to strategize the posture of the work to ensure that the concert safe and orderly manner.