Core Points - The "Le Pin Shanghai" dining consumption voucher program will have its fourth round registration starting this Saturday, May 31, 2025 [2] - The vouchers will have three denominations: 90 yuan for a minimum spend of 300 yuan, 180 yuan for a minimum spend of 500 yuan, and 400 yuan for a minimum spend of 1000 yuan [3][5] - The average winning rate for the vouchers in April was 17.6%, with a total of 4.9 million participants, marking a 26.5% increase from the previous month [5] Registration and Usage - Consumers can register for the vouchers from May 31 to June 2, with results announced by June 5, and vouchers available for use starting June 7 until July 20 [3] - Registration can be done through UnionPay, Alipay, and WeChat, requiring users to authorize the use of personal information [3] Fairness and Security Measures - The program has shifted from a "grab voucher" model to a "lottery" model to enhance fairness, with public notarization involved [5] - Security upgrades have been implemented across the platforms to prevent fraudulent activities and ensure that more consumers benefit from the vouchers [5]