Group 1 - The "May Day" holiday has led to a peak in return travel across multiple regions in China, with various departments optimizing traffic management and enhancing safety measures to ensure smooth travel for passengers [1] - In Hebei province, the highway traffic has remained at a high level, particularly on the Jinggang'ao Expressway, with significant traffic flow expected on May 5 for those returning to Beijing [2] - To accommodate the surge in electric vehicle charging needs, the Shijiazhuang South service area on the Qingyin Expressway has added multiple charging stations, increasing charging capacity by approximately 50% [2] Group 2 - The average daily traffic on the Hangzhou-Ningbo Expressway during the holiday reached about 140,000 vehicles, double the normal volume, indicating a significant increase in travel activity [3] - The Zhejiang Transportation Group has implemented a collaborative smart traffic system that allows for AI warnings and rapid response, reducing rescue times by 14.7% [3] - The Nanchang Railway Bureau reported sending 1.39 million passengers on May 4, a year-on-year increase of 5.7%, and has added 142 additional trains to accommodate the return flow [3]