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Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) - CNY (¥) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Schedule of Contract Liabilities [Line Items] |  |
Advance from educational content service and other services | ¥ 3,862,705 | ¥ 6,064,243
Total | 3,866,125 | 6,070,210
Subscription service [Member] |  |
Schedule of Contract Liabilities [Line Items] |  |
Advance from educational content service and other services | 3,862,705 | 6,064,243
Advance from IT related solution services [Member] |  |
Schedule of Contract Liabilities [Line Items] |  |
Advance from IT related solution services | ¥ 3,420 | ¥ 5,967

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