Group 1 - The U.S. confirmed that automotive parts manufactured in Canada and Mexico will be exempt from a 25% tariff as part of the USMCA agreement, effective May 3 [3] Group 2 - The China Railway 12306 system reported that as of May 1, it had sold 106 million tickets for the May Day holiday, with 43.56 million refunds and 10.83 million ticket changes processed [6] - The system's ticket sales remained stable, with approximately 19 million tickets sold daily on April 29 and 30, and adjustments made to ticket availability based on demand [6][7] - The 12306 system allows passengers to use a ticket reservation feature, enabling them to select up to 60 combinations of "date + train number" for ticket requests [7] Group 3 - A child accidentally damaged a Mark Rothko painting valued at €50 million (approximately 410 million RMB) at the Boijmans Van Beuningen Museum in Rotterdam [11] - The museum has not disclosed the identity of the child or who will bear the cost of the damage, but restoration experts are evaluating repair options [12][13] - This incident is not the first of its kind at the museum, as a similar event occurred in 2011 [14] Group 4 - West Air has begun selling scratch-off lottery tickets on select flights since April 7, in collaboration with the Chongqing Welfare Lottery Center [18][19] - Passengers can claim winnings by contacting the flight attendants or through the "Chongqing Welfare Lottery" WeChat mini-program [19]