v3.26.3
Schedule of related party transaction (Details) - Related Party [Member] - Tops Future Microelectronics Co Ltd [Member] - CNY (¥)
¥ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]    
Products revenue – related party ¥ 10,852
Other income – related party (disposal of technology and intellectual property assets) ¥ 2,830