Holiday promotion refers to a new sales method, combining the characteristics of consumers who have time and purchasing power on holidays, and adopts some unique sales methods to promote the sale of goods. Which of the following are not holiday promotions? ['Every weekend, in the Xinjiekou business district of Nanjing, there will be a song and dance performances at the entrance of each major shopping mall to attract consumers to patronize.', 'A shopping mall announced that during the National Day seven-day holiday, buy 400 yuan goods and get 100 yuan shopping vouchers.', 'Because a shopping mall is undergoing expansion and renovation, it will sell 20% off all products before it is closed for renovation.', "During Children's Day, a certain brand of toys advertises, and everyone who buys their toys can participate in the raffle."]