明天起，在北京消费开发票可抽奖，特等奖800元

Group 1 - The core initiative is a prize invoice activity launched in Beijing before the Spring Festival, encouraging consumers to request compliant invoices and enhancing consumer rights [1][2] - The activity will run from February 11 to the end of July, targeting all citizens and visitors in Beijing, with no additional registration required [1] - Consumers can participate by requesting electronic invoices for purchases over 100 yuan and uploading the invoice information to a designated platform for a chance to win cash prizes [1] Group 2 - The prize structure includes five categories: a grand prize of 800 yuan, first prize of 200 yuan, second prize of 100 yuan, third prize of 50 yuan, and encouragement prize of 10 yuan [1] - The initiative aims to stimulate consumer spending during the Spring Festival and summer seasons, enhancing market activity through an engaging and widely beneficial format [2]