v3.26.1
Organization and principal activities - Additional information (Details)
¥ in Thousands, $ in Thousands
Jul. 26, 2022
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Weidong Luo        
Organization and principal activities        
Variable Interest Entity, Ownership Percentage 80.00%      
Xiaodao Wang        
Organization and principal activities        
Variable Interest Entity, Ownership Percentage 10.00%      
Jiawen Fang        
Organization and principal activities        
Variable Interest Entity, Ownership Percentage 10.00%      
Guangyan Chen        
Organization and principal activities        
Variable Interest Entity, Ownership Percentage 20.00%      
VIE        
Organization and principal activities        
Net liabilities   $ 21,427 ¥ 149,848 ¥ 158,505
Cash Collateral   $ 0 ¥ 0 ¥ 0
Variable Interest Entity, Asset, Pledged Status [Extensible Enumeration]   us-gaap:AssetNotPledgedAsCollateralMember us-gaap:AssetNotPledgedAsCollateralMember us-gaap:AssetNotPledgedAsCollateralMember