v3.26.3
Operating segments (Tables)
6 Months Ended
Jun. 30, 2026
Segment Reporting [Abstract]  
Schedule of disaggregated cost of revenue and research and development

 

       
   For the six months ended June 30, 
   2025   2026 
   (RMB in thousands) 
Cost of revenue (excluding the impact of write-down)   35,170    7,735 
Inventory provision, write-down of prepayments and provision for inventory purchase commitments   54,782    14,332 
Total cost of revenue   89,952    22,067 
Salary, bonus, welfare and share-based compensation expense   21,645    16,225 
New products development   18,134    4,907 
Depreciation   1,813    1,223 
Total research and development expenses   41,592    22,355