(TrendHunter.com) To mark the first anniversary of its Princess Connect! game, Bilibili flew more than 1,500 drones over Shanghai to create a QR code in the sky. The spectacle started out by having the drones perform... (TrendHunter.com) To mark the first anniversary of its Princess Connect! game, Bilibili flew more than 1,500 drones over Shanghai to create a QR code in the sky. The spectacle started out by having the drones perform...