国家统计局：深圳6月二手住宅价格环比-0.5%（前值-0.5%），同比-2.8%（前值-3.2%）。

Group 1 - The core point of the article indicates that the second-hand residential prices in Shenzhen decreased by 0.5% month-on-month in June, consistent with the previous month's decline of 0.5% [1] - Year-on-year, the prices fell by 2.8%, an improvement from the previous year's decline of 3.2% [1]