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v3.25.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional information (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands, $ in Thousands |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 CNY (¥) item $ / shares | Dec. 31, 2024 CNY (¥) item loan | Dec. 31, 2024 USD ($) loan | Dec. 31, 2024 HKD ($) loan | Dec. 31, 2023 CNY (¥) item | Dec. 31, 2022 CNY (¥) | Dec. 31, 2024 USD ($) item | Dec. 31, 2021 item | Dec. 31, 2020 item | Jan. 01, 2018 CNY (¥)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Net loss from continuing operations |  | ¥ 652,075 | $ (89,333) |  | ¥ 531,021 | ¥ 768,990 |  |  |  |
Net cash (used in) generated from operating activities |  | (397,749) | $ (54,491) |  | (276,471) | (216,694) |  |  |  |
Cash and cash equivalents | ¥ 216,224 | 216,224 |  |  | 58,139 |  | $ 29,623 |  |  |
Working capital | 1,141,383 | 1,141,383 |  |  |  |  | 156,368 |  |  |
Accumulated deficit | ¥ (4,372,832) | ¥ (4,372,832) |  |  | ¥ (4,064,589) |  | $ (599,076) |  |  |
Number of loan contracts | loan |  | 11 | 11 | 11 |  |  |  |  |  |
Amount of loan contract |  | ¥ 167,170 | $ 22,902 |  |  |  |  |  |  |
Noon buying rate | 7.2993 | 7.2993 |  |  |  |  | 7.2993 |  |  |
Conversion from noon buying rate to per share value | $ / shares | ¥ 1 |  |  |  |  |  |  |  |  |
Description of liquid investments maturity term |  | 90 days | 90 days | 90 days |  |  |  |  |  |
Number of reporting units after disposal of the GFHM | item | 2 | 2 |  |  | 2 |  | 2 |  |  |
Interest costs incurred |  | ¥ 249,534 | $ 34,186 |  | ¥ 223,936 | 180,847 |  |  |  |
Interest and other costs relating to construction capitalized |  | 56,334 | 7,718 |  | 58,267 | 60,490 |  |  |  |
Impairment on long-lived assets | ¥ |  | 0 |  |  | ¥ 0 | 0 |  |  |  |
Gross proceeds from the initial public offering |  | ¥ 510,522 | $ 69,941 | $ 554,914 |  | ¥ 0 |  |  |  |
CHS [Member] |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Number of reporting units after disposal of the GFHM | item |  |  |  |  |  |  |  | 2 | 2 |
Minimum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessor, sales-type lease, term of contract | 5 years | 5 years |  |  |  |  | 5 years |  |  |
Maximum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessor, sales-type lease, term of contract | 20 years | 20 years |  |  |  |  | 20 years |  |  |
Offices and facility under leases | Minimum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessee, finance lease, term of contract | 1 year | 1 year |  |  |  |  | 1 year |  |  |
Lessee, operating lease, term of contract | 1 year | 1 year |  |  |  |  | 1 year |  |  |
Offices and facility under leases | Maximum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessee, finance lease, term of contract | 20 years | 20 years |  |  |  |  | 20 years |  |  |
Land use rights under leases |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessee, finance lease, term of contract | 50 years | 50 years |  |  |  |  | 50 years |  |  |
Lessee, operating lease, term of contract | 50 years | 50 years |  |  |  |  | 50 years |  |  |
Equipment leased to others | Minimum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessor, sales-type lease, term of contract | 5 years | 5 years |  |  |  |  | 5 years |  |  |
Equipment leased to others | Maximum |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Lessor, sales-type lease, term of contract | 20 years | 20 years |  |  |  |  | 20 years |  |  |
Cumulative effect, period of adoption, adjusted balance |  |  |  |  |  |  |  |  |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |  |  |  |  |  |
Accumulated deficit | ¥ |  |  |  |  |  |  |  |  |  | ¥ 5,632

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