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Income Taxes - Schedule of unrecognized tax benefits (Details)	12 Months Ended
	Dec. 31, 2023 CNY (¥)
Income taxes
Additions	¥ 34,580,410
Decreases	(34,580,410)
Balance at end of the year	¥ 0

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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