China's National Committee for Disaster Reduction has issued an emergency notice recently to require all relevant departments to make comprehensive efforts to thoroughly investigate and address the hidden risks of disasters in infrastructure such as highways during the flood season. The collapse trapped 23 cars under nearly 18 meters of road, covering approximately 184 square meters. Also, for railway lines, special attention should be given to inspecting risks of disasters such as flash floods, mudslides and landslides. For tourist attractions, particular attention should be given to inspecting safety hazards such as large-scale amusement facilities, flash flood channels, rock collapses, and loose mountain slopes, according to the notice. Beginning on Saturday, there will be a surge in return travel for the May Day holidays across different regions, resulting in heavy traffic on expressways and major national and provincial highways.