Group 1: Cloud Marriage Registration - The first cloud marriage registration point in Shanghai was launched at the 52nd floor of the Global Harbor in Putuo District, allowing couples to experience a unique registration process that combines romance and urban culture [1][2] - The cloud registration point features five functional areas: registration area, certificate issuance area, waiting area, outdoor viewing area, and outdoor photo area, providing a comprehensive service for couples [2] - The new marriage registration regulations, effective from May 10, eliminate regional restrictions and the need for a household registration book, marking a new phase of nationwide marriage registration [1][3] Group 2: Sweet Love Train and Activities - The "Sweet Love Train" (DZ1520) offers a themed journey for couples registering at the Sweet Love Marriage Registration Center, connecting various landmarks in Hongkou District [4][5] - The train service includes promotional activities at stops, such as gift distribution and a special music concert, enhancing the romantic experience for newlyweds [4][5] - The Sweet Love Industry Alliance in Hongkou District has recruited 89 businesses to create a comprehensive sweet love industry chain, aiming to expand to 120 businesses in three years [6] Group 3: Economic Opportunities and Trends - The shift to nationwide marriage registration creates new business opportunities for various districts, encouraging them to develop romantic scenes and events to attract couples [6][7] - The focus on the sweet love industry in Hongkou District aims to integrate wedding culture with the sweet economy, enhancing competitiveness in the Yangtze River Delta region [6] - Recent events, such as the Yangtze River Delta Youth Dating Carnival, have attracted significant participation and provided exclusive consumer vouchers, promoting local businesses [6]