国家统计局： 1-9月份，全国房地产开发投资67706亿元，同比下降13.9%

Group 1 - The core viewpoint indicates a significant decline in the real estate sector, with construction area and new housing starts experiencing notable decreases in 2023 [1] Group 2 - From January to September, the total construction area for real estate development was 648,580 million square meters, a year-on-year decrease of 9.4% [1] - The residential construction area was 452,165 million square meters, down 9.7% compared to the previous year [1] - The new housing starts amounted to 45,399 million square meters, reflecting an 18.9% decline [1] Group 3 - The sales area of newly built commercial housing reached 65,835 million square meters, which is a 5.5% decrease year-on-year [1] - The residential sales area also saw a decline of 5.6% [1] - The total sales revenue for newly built commercial housing was 63,040 billion yuan, down 7.9%, with residential sales revenue decreasing by 7.6% [1]