Parent Only Financial Information - Schedule of Condensed Balance Sheets (Details) - Parent Company [Member] ¥ in Thousands, $ in Thousands |
Dec. 31, 2025
CNY (¥)
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Dec. 31, 2025
USD ($)
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Dec. 31, 2024
CNY (¥)
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|---|---|---|---|---|---|
| Current assets: | |||||
| Cash and cash equivalents | ¥ 317 | $ 45 | ¥ 1,504 | ||
| Prepaid expenses and other current assets | 99 | 14 | 112 | ||
| Due from subsidiaries | 536,534 | 76,723 | 438,701 | ||
| Total current assets | 536,950 | 76,782 | 440,317 | ||
| Non-current assets: | |||||
| Intangible assets, net | 51,430 | 7,354 | |||
| Total non-current assets | 51,430 | 7,354 | |||
| Total assets | 588,380 | 84,136 | 440,317 | ||
| Current liabilities: | |||||
| Accrued expenses and other current liabilities | 19,721 | 2,820 | 346,837 | ||
| Due to intercompany | 423,671 | 60,584 | 43,927 | ||
| Excess losses over investment | [1] | 42,246 | 6,040 | 1,852,411 | |
| Total current liabilities | 485,638 | 69,444 | 2,243,175 | ||
| Total liabilities | 485,638 | 69,444 | 2,243,175 | ||
| Commitments and contingencies | |||||
| Shareholders’ deficit: | |||||
| Treasury shares (16,224,888 Class A ordinary shares as of December 31, 2024 and 2025, at cost, respectively) | (486,706) | (69,598) | (486,706) | ||
| Additional paid-in capital | 1,826,214 | 261,145 | 1,643,672 | ||
| Accumulated other comprehensive income | 54,850 | 7,843 | 54,266 | ||
| Accumulated deficit | (1,295,645) | (185,275) | (3,014,534) | ||
| Total shareholders’ (deficit) equity | 102,742 | 14,692 | (1,802,858) | ||
| Total liabilities and shareholders’ equity | 588,380 | 84,136 | 440,317 | ||
| Class A Ordinary Shares | |||||
| Shareholders’ deficit: | |||||
| Ordinary shares, value | 3,955 | 566 | 370 | ||
| Class B Ordinary Shares | |||||
| Shareholders’ deficit: | |||||
| Ordinary shares, value | ¥ 74 | $ 11 | ¥ 74 | ||
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| X | ||||||||||
- Definition Amount of liabilities incurred to vendors for goods and services received, and accrued liabilities classified as other, payable within one year or the normal operating cycle, if longer. No definition available.
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- 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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- 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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- Definition Amount of asset recognized for present right to economic benefit, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. 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 short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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 Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. 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 | ||||||||||
- 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 Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of due from subsidiaries. No definition available.
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| X | ||||||||||
- Definition Amount of due to intercompany. No definition available.
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| X | ||||||||||
- Definition Amount of excess losses over investment. No definition available.
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- Details
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- Details
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- Details
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