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Other Current Assets - Schedule of Other Current Assets (Details)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)
Other Current Liabilities [Abstract]
Value-added tax recoverable	¥ 50,830,552		¥ 34,041,675
Deposits	2,202,904		2,361,968
Others	2,824,977		1,504,449
Total	¥ 55,858,433	$ 7,770,635	¥ 37,908,092

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Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Name Accounting Standards Codification
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Amount of current assets classified as other.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Amount of other miscellaneous assets expected to be realized or consumed within one year or operating cycle, if longer.

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No definition available.

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Carrying amount as of the balance sheet date of value added taxes due either from customers arising from sales on credit terms, or as previously overpaid to tax authorities. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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