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Revenue (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Revenue      
Real estate operation management and services ¥ 5,018 ¥ 3,365 ¥ 0
Digital security technology services 3,820 8,950 0
Total ¥ 8,838 ¥ 12,315 ¥ 0