v3.26.1
Trade receivables, net - Schedule of ECL Allowance (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Within 1 year [Member]    
Trade receivables    
Expected loss rate 4.90% 11.10%
Within 1 year [Member] | Gross carrying amount [member]    
Trade receivables    
Financial assets ¥ 8,156 ¥ 67,843
Within 1 year [Member] | Accumulated impairment [member]    
Trade receivables    
Financial assets ¥ 398 ¥ 7,536
1-2 years [Member]    
Trade receivables    
Expected loss rate 33.90% 28.00%
1-2 years [Member] | Gross carrying amount [member]    
Trade receivables    
Financial assets ¥ 16,567 ¥ 21,615
1-2 years [Member] | Accumulated impairment [member]    
Trade receivables    
Financial assets ¥ 5,616 ¥ 6,047
2-3 years [Member]    
Trade receivables    
Expected loss rate 61.70% 49.20%
2-3 years [Member] | Gross carrying amount [member]    
Trade receivables    
Financial assets ¥ 7,844 ¥ 5,992
2-3 years [Member] | Accumulated impairment [member]    
Trade receivables    
Financial assets ¥ 4,839 ¥ 2,947
Over 3 years [Member]    
Trade receivables    
Expected loss rate 100.00% 100.00%
Over 3 years [Member] | Gross carrying amount [member]    
Trade receivables    
Financial assets ¥ 1,280 ¥ 329
Over 3 years [Member] | Accumulated impairment [member]    
Trade receivables    
Financial assets ¥ 1,280 ¥ 329