v3.26.1
Share capital (Details)
¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
¥ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
CNY (¥)
¥ / shares
shares
Dec. 31, 2023
CNY (¥)
¥ / shares
shares
Class A Common Shares        
Numerator:        
Net (loss)/income attributable to common shareholders ¥ 334 $ 48 ¥ (5,545) ¥ (48,851)
Denominator:        
Weighted average number of shares used in calculating basic loss per share 63,357,628 63,357,628 62,802,678 62,688,838
Weighted average number of shares used in calculating diluted loss per share 63,357,628 63,357,628 62,802,678 62,688,838
Basic loss per share | (per share) ¥ 0.01 $ 0 ¥ (0.09) ¥ (0.78)
Diluted loss per share | (per share) ¥ 0.01 $ 0 ¥ (0.09) ¥ (0.78)
Class B Common Shares        
Numerator:        
Net (loss)/income attributable to common shareholders ¥ 89 $ 13 ¥ (1,501) ¥ (13,247)
Denominator:        
Weighted average number of shares used in calculating basic loss per share 17,000,189 17,000,189 17,000,189 17,000,189
Weighted average number of shares used in calculating diluted loss per share 17,000,189 17,000,189 17,000,189 17,000,189
Basic loss per share | (per share) ¥ 0.01 $ 0 ¥ (0.09) ¥ (0.78)
Diluted loss per share | (per share) ¥ 0.01 $ 0 ¥ (0.09) ¥ (0.78)