Investments - Schedule of Unrealized and Realized Gains and Losses of Investments in Equity Securities in Current Assets (Details) |
12 Months Ended | |||
|---|---|---|---|---|
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Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
CNY (¥)
|
Dec. 31, 2022
CNY (¥)
|
|
| Schedule of Unrealized and Realized Gains and Losses of Investments in Equity Securities in Current Assets [Line Items] | ||||
| Total net losses recognized | ¥ (2,544,834) | $ (348,641) | ¥ (15,344,616) | ¥ (2,622,450) |
| Less: Net realized (losses) gains on equity securities sold | (1,245,632) | (170,651) | 11,294,390 | |
| Net unrealized losses recognized on equity securities held | ¥ (1,299,202) | $ (177,990) | ¥ (15,344,616) | ¥ (13,916,840) |