SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY - BALANCE SHEETS (Details) |
Dec. 31, 2025
CNY (¥)
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Dec. 31, 2025
USD ($)
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Dec. 31, 2024
CNY (¥)
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Dec. 31, 2023
CNY (¥)
|
|---|---|---|---|---|
| Assets: | ||||
| Cash and cash equivalents | ¥ 987,630,978 | $ 141,229,352 | ¥ 984,611,409 | ¥ 1,195,351,730 |
| Prepaid expenses and other current assets | 43,546,807 | 6,227,111 | 34,078,494 | |
| Total assets | 14,665,744,467 | 2,097,173,566 | 11,819,289,603 | |
| Liabilities: | ||||
| Accrued expenses and other current liabilities | 1,041,055,440 | 148,868,948 | 929,490,436 | |
| Total liabilities | 6,828,943,830 | 976,525,980 | 4,866,134,961 | |
| Equity: | ||||
| Common shares | 206,793 | 29,571 | 206,793 | |
| Treasury stock | (967,773,090) | (138,389,711) | (509,643,763) | |
| Additional paid-in capital | 3,256,349,216 | 465,651,744 | 3,207,028,391 | |
| Retained earnings | 5,484,293,291 | 784,243,511 | 4,174,511,191 | |
| Accumulated other comprehensive income | 63,724,427 | 9,112,471 | 81,052,030 | |
| Total equity | 7,836,800,637 | 1,120,647,586 | 6,953,154,642 | |
| Total liabilities and equity | 14,665,744,467 | 2,097,173,566 | 11,819,289,603 | |
| Parent Company | Reportable legal entity | ||||
| Assets: | ||||
| Cash and cash equivalents | 7,934,940 | 1,134,681 | 1,359,623 | |
| Prepaid expenses and other current assets | 500,011 | 71,501 | 390,721 | |
| Amount due from subsidiaries and VIEs | 324,658,501 | 46,425,548 | 910,228,376 | |
| Investments in subsidiaries and VIEs | 7,503,918,049 | 1,073,046,009 | 6,286,783,144 | |
| Total assets | 7,837,011,501 | 1,120,677,739 | 7,198,761,864 | |
| Liabilities: | ||||
| Accrued expenses and other current liabilities | 210,864 | 30,153 | 245,607,222 | |
| Total liabilities | 210,864 | 30,153 | 245,607,222 | |
| Equity: | ||||
| Common shares | 206,793 | 29,571 | 206,793 | |
| Treasury stock | (967,773,090) | (138,389,711) | (509,643,763) | |
| Additional paid-in capital | 3,256,349,216 | 465,651,744 | 3,207,028,391 | |
| Retained earnings | 5,484,293,291 | 784,243,511 | 4,174,511,191 | |
| Accumulated other comprehensive income | 63,724,427 | 9,112,471 | 81,052,030 | |
| Total equity | 7,836,800,637 | 1,120,647,586 | 6,953,154,642 | |
| Total liabilities and equity | ¥ 7,837,011,501 | $ 1,120,677,739 | ¥ 7,198,761,864 |
| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other. No definition available.
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| X | ||||||||||
- Definition Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of investment in equity method investee and investment in and advance to affiliate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The amount of due from subsidiaries and variable interest entities. No definition available.
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- Details
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- Details
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