Restricted Net Assets	12 Months Ended
Dec. 31, 2025
Restricted Net Assets [Abstract]
RESTRICTED NET ASSETS	19. RESTRICTED NET ASSETS Relevant PRC statutory laws and regulations permit payments of dividends by the Group’s PRC subsidiaries only out of their retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the financial statements prepared in accordance with U.S. GAAP differ from those reflected in the statutory financial statements of the Company’s subsidiaries. In accordance with the Regulations on Enterprises with Foreign Investment of China, a foreign invested enterprise established in the PRC is required to provide certain statutory reserves, namely general reserve fund, enterprise expansion fund, and staff welfare and bonus fund which are appropriated from net profit as reported in the enterprise’s PRC statutory accounts, which is included in retained earnings accounts in equity section of the consolidated balance sheets. A wholly foreign owned invested enterprise is required to allocate at least 10% of its annual after-tax profit to the general reserve until such reserve reaches 50% of its respective registered capital based on the enterprise’s PRC statutory accounts. Appropriations to the enterprise expansion fund and staff welfare and bonus fund are at the discretion of the board of directors for all foreign invested enterprises. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. If any PRC subsidiary incurs debt on its own behalf in the future, the instruments governing the debt may restrict its ability to pay dividends or make other payments to the Group. Any limitation on the ability of the PRC subsidiaries to distribute dividends or other payments to their respective shareholders could materially and adversely limit the ability to grow, make investments or acquisitions that could be beneficial to pay dividends. Additionally, in accordance with the Company Law of the PRC, a domestic enterprise is required to provide a statutory common reserve of at least 10% of its annual after-tax profit until such reserve reaches 50% of its respective registered capital based on the enterprise’s PRC statutory accounts. The Group’s provision for the statutory common reserve is in compliance with the aforementioned requirement of the Company Law. A domestic enterprise is also required to provide for discretionary surplus reserve, at the discretion of the board of directors, from the profits determined in accordance with the enterprise’s PRC statutory accounts. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. For the years ended December 31, 2024 and 2025, the PRC subsidiaries did not have after-tax profit, and therefore, no statutory reserves were allocated. Because the Group’s entities in the PRC can only be paid out of distributable profits reported in accordance with PRC accounting standards, the Group’s entities in the PRC are restricted from transferring a portion of their net assets to the Company. The restricted amounts include the paid-in capital and additional paid-in capital of the Group’s entities in the PRC. The aggregate amount of paid-in capital and additional paid-in capital, which is the amount of net assets of the Group’s entities in the PRC (mainland) not available for distribution, were RMB818,712 and RMB503,997 (US$71,705) as of December 31, 2024 and 2025, respectively.

Restricted Net Assets

12 Months Ended

Dec. 31, 2025

19. RESTRICTED NET ASSETS

Relevant PRC statutory laws and regulations permit payments of dividends by the Group’s PRC subsidiaries only out of their retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the financial statements prepared in accordance with U.S. GAAP differ from those reflected in the statutory financial statements of the Company’s subsidiaries.

In accordance with the Regulations on Enterprises with Foreign Investment of China, a foreign invested enterprise established in the PRC is required to provide certain statutory reserves, namely general reserve fund, enterprise expansion fund, and staff welfare and bonus fund which are appropriated from net profit as reported in the enterprise’s PRC statutory accounts, which is included in retained earnings accounts in equity section of the consolidated balance sheets. A wholly foreign owned invested enterprise is required to allocate at least 10% of its annual after-tax profit to the general reserve until such reserve reaches 50% of its respective registered capital based on the enterprise’s PRC statutory accounts.

Appropriations to the enterprise expansion fund and staff welfare and bonus fund are at the discretion of the board of directors for all foreign invested enterprises. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. If any PRC subsidiary incurs debt on its own behalf in the future, the instruments governing the debt may restrict its ability to pay dividends or make other payments to the Group. Any limitation on the ability of the PRC subsidiaries to distribute dividends or other payments to their respective shareholders could materially and adversely limit the ability to grow, make investments or acquisitions that could be beneficial to pay dividends.

Additionally, in accordance with the Company Law of the PRC, a domestic enterprise is required to provide a statutory common reserve of at least 10% of its annual after-tax profit until such reserve reaches 50% of its respective registered capital based on the enterprise’s PRC statutory accounts. The Group’s provision for the statutory common reserve is in compliance with the aforementioned requirement of the Company Law. A domestic enterprise is also required to provide for discretionary surplus reserve, at the discretion of the board of directors, from the profits determined in accordance with the enterprise’s PRC statutory accounts. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. For the years ended December 31, 2024 and 2025, the PRC subsidiaries did not have after-tax profit, and therefore, no statutory reserves were allocated.

Because the Group’s entities in the PRC can only be paid out of distributable profits reported in accordance with PRC accounting standards, the Group’s entities in the PRC are restricted from transferring a portion of their net assets to the Company. The restricted amounts include the paid-in capital and additional paid-in capital of the Group’s entities in the PRC. The aggregate amount of paid-in capital and additional paid-in capital, which is the amount of net assets of the Group’s entities in the PRC (mainland) not available for distribution, were RMB818,712 and RMB503,997 (US$71,705) as of December 31, 2024 and 2025, respectively.