parcel_id,area_id,transaction_date,parcel_name,residential_gfa_sqm,transaction_price_total_cny,floor_price_cny_psm,buyer,source_url,source
sh-2026-001,zhangjiang,2026-05-28,张江示例住宅地块,36000,1800000000,50000,示例房企,https://example.com/land-sale,official_auction