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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - CNY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
CONSOLIDATED STATEMENTS OF CASH FLOWS |  |
Deferred loan costs | ¥ 3.5 | ¥ 0.9

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- Definition The amount of deferred loan costs incurred during the period from bitcoin mortgage borrowing in a non-cash transaction. + References No definition available. + Details
Name: | ncty_DeferredLoanCostsIncurredFromBitcoinMortgageBorrowing
Namespace Prefix: | ncty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration