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CONDENSED CONSOLIDATED STATEMENT OF PROFIT OR LOSS - CNY (¥)
¥ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
CONDENSED CONSOLIDATED STATEMENT OF PROFIT OR LOSS    
Total revenue ¥ 345,857 ¥ 199,615
Cost of revenue (219,384) (138,556)
Gross profit 126,473 61,059
Other net income 22,612 3,021
Research and development expenses (797,654) (644,635)
Administrative expenses (152,066) (278,942)
Selling expenses (51,891) (27,780)
Impairment loss on receivables and contract assets (384) (2,800)
Operating loss (852,910) (890,077)
Net foreign exchange gain/(loss) (24,489) 5,629
Interest income 98,506 74,946
Fair value changes of financial assets at fair value through profit or loss ("FVTPL") (5,909) 23,154
Finance costs (5,089) (3,292)
Loss before taxation (789,891) (789,640)
Income tax 141 (1,877)
Loss for the period (789,750) (791,517)
Loss attributable to shareholders of the Company ¥ (789,750) ¥ (791,517)
Loss per ordinary share    
Basic loss per Class A and Class B ordinary share ¥ (0.79) ¥ (0.87)
Diluted loss per Class A and Class B ordinary share ¥ (0.79) ¥ (0.87)
Product [member]    
CONDENSED CONSOLIDATED STATEMENT OF PROFIT OR LOSS    
Total revenue ¥ 112,783 ¥ 69,281
Cost of revenue (75,578) (35,461)
Service [member]    
CONDENSED CONSOLIDATED STATEMENT OF PROFIT OR LOSS    
Total revenue 233,074 130,334
Cost of revenue ¥ (143,806) ¥ (103,095)