"This is the best ice I've ever skated!" "In such a good ice competition, I want to hit PB (personal best)!" "The ice here is so smooth, especially the walkway!" At the 2022-2023 National Speed Skating Youth Championships, which ended earlier this month, almost all skaters praised the ice surface of the "Ice Ribbon" at the venue. "These parameters are not fixed, but also need to be scientifically and dynamically adjusted according to the lighting settings in the venue"