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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) | Jun. 30, 2025 CNY (¥) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 CNY (¥)
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Schedule of Prepaid Expenses and Other Current Assets [Abstract] |  |  |
Tax recoverable | ¥ 8,414,408 |  | ¥ 9,555,701
Prepaid consulting service fee | 3,827,850 |  | 3,941,513
Deposits | 1,083,400 |  | 1,414,787
Loan receivable due from a third party | 1,892,657 |  | 1,000,000
Prepaid expense |  |  | 109,837
Other receivables | 2,645,555 |  | 909,966
Total | ¥ 17,863,870 | $ 2,493,700 | ¥ 16,931,804

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