The Huawei Mate 40 series was released for sale via e-tailers such as JD.com in China on October 30, 2020. A new report claims that it took this site only 11 seconds to sell out of the new phones completely on this first day. It released light-up drones which synchronized in air to spell out celebratory messages over its Beijing headquarters to mark this event.
https://www.notebookcheck.net/JD-com-holds-a-drone-air-show-to-celebrate-selling-its-stock-of-the-Huawei-Mate-40-series-in-just-11-seconds.501485.0.html