Unaudited Condensed Parent Company Balance Sheets (Parenthetical) (Details)	Jun. 30, 2026 $ / shares shares	Jun. 30, 2026 ¥ / shares shares	Dec. 31, 2025 $ / shares shares	Dec. 31, 2025 ¥ / shares shares	Aug. 23, 2018 ¥ / shares shares
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value \| ¥ / shares					¥ 0.00001
Ordinary shares, shares authorized					50,000,000
Common Class A [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value \| (per share)	$ 0.00001		$ 0.00001		¥ 0.00001
Ordinary shares, shares authorized	4,800,000,000	4,800,000,000	4,800,000,000	4,800,000,000	4,800,000,000
Ordinary shares, shares issued	95,171,125	95,171,125	99,200,641	99,200,641
Ordinary shares, shares outstanding	95,171,125	95,171,125	99,200,641	99,200,641
Common Class B [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value \| (per share)	$ 0.00001		$ 0.00001		¥ 0.00001
Ordinary shares, shares authorized	150,000,000	150,000,000	150,000,000	150,000,000	150,000,000
Ordinary shares, shares issued	102,674,548	102,674,548	102,764,548	102,764,548
Ordinary shares, shares outstanding	102,674,548	102,674,548	102,764,548	102,764,548
Parent Company [Member] \| Common Class A [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value \| ¥ / shares		¥ 0.00001		¥ 0.00001
Ordinary shares, shares authorized	4,800,000,000	4,800,000,000	4,800,000,000	4,800,000,000
Ordinary shares, shares issued	95,171,125	95,171,125	99,200,641	99,200,641
Ordinary shares, shares outstanding	95,171,125	95,171,125	99,200,641	99,200,641
Parent Company [Member] \| Common Class B [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value \| ¥ / shares		¥ 0.00001		¥ 0.00001
Ordinary shares, shares authorized	150,000,000	150,000,000	150,000,000	150,000,000
Ordinary shares, shares issued	102,674,548	102,674,548	102,764,548	102,764,548
Ordinary shares, shares outstanding	102,674,548	102,674,548	102,764,548	102,764,548

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

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+ Details