房哨兵 Housing Sentinel

Official daily housing-transaction data and offense/defense market signals for 12 major Chinese cities (Shenzhen, Shanghai, Beijing, Guangzhou, Hangzhou, Nanjing, Suzhou, Wuxi, Chengdu, Chongqing, Dongguan, Xiamen). Signals derive from second-hand inventory absorption cycles: >=18mo = defense, 12-18 = watch, 8-12 = buy, <8 = strong buy. Requires a subscriber API key from housingsentinel.cn.