上海跟进松绑楼市，一线城市最新版限购政策看过来

Group 1 - The core viewpoint of the article is that Shanghai has relaxed its housing purchase restrictions, following a similar move by Beijing, indicating a trend in major cities to adjust real estate policies to stimulate the market [1] - The new policy allows local residents and non-local residents who have paid social insurance or personal income tax in Shanghai for at least one year to purchase an unlimited number of homes outside the outer ring [1] - Single adults will be subject to the same housing purchase restrictions as family units, reflecting a more inclusive approach to housing policy [1] Group 2 - Compared to other first-tier cities, Guangzhou has completely lifted purchase restrictions, while Shenzhen has implemented district-specific restrictions requiring non-local residents to have one year of social insurance [1] - The adjustments in Shanghai's housing policy align closely with those made in Beijing, particularly in terms of the number of properties that can be purchased, without altering social insurance duration or restricted areas [1]