Actors perform at the opening ceremony of the 81st World Science Fiction Convention, with a digital version of a golden mask, one of most famous cultural relics discovered at the Sanxingdui Ruins site, in the background, in Chengdu, Southwest China's Sichuan Province, on October 18, 2023. Chengdu is the second city in Asia and the first in China to host the convention, which is one of the most anticipated, longest-running and largest sci-fi events in the world. Photo: Courtesy of organizers