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Convertible notes payable (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Convertible debt
The following is a summary of the Company’s convertible notes payable and its fair values as of December 31, 2023 and 2024.
Fair Value
Principal amountUnamortized debt issuance costsNet carrying amountAmountLeveling
RMBRMBRMBRMB
As of December 31, 2023461,494 (5,793)455,701 396,884 Level 3
As of December 31, 2024474,455 (3,845)470,610 481,754 Level 3