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PROPERTY, PLANT AND EQUIPMENT, NET | 12 Months Ended
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Dec. 31, 2025
PROPERTY, PLANT AND EQUIPMENT, NET |
PROPERTY, PLANT AND EQUIPMENT, NET | 10.PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As at December 31,
​ | ​ | 2024 | ​ | 2025 | ​ | 2025
​ | ​ ​ ​ | RMB | ​ ​ ​ | RMB | ​ ​ ​ | US$
Buildings |  | 798,097 | ​ | 823,243 | ​ | 117,722
Medical equipment |  | 865,416 | ​ | 877,850 | ​ | 125,531
Electronic and office equipment |  | 55,202 | ​ | 49,128 | ​ | 7,025
Motor vehicles |  | 2,649 | ​ | 2,754 | ​ | 394
Leasehold improvement and building improvements |  | 77,683 | ​ | 77,894 | ​ | 11,139
Construction in progress |  | 2,307,336 | ​ | 2,392,265 | ​ | 342,089
Total |  | 4,106,383 | ​ | 4,223,134 | ​ | 603,900
Less: accumulated depreciation |  | (394,273) | ​ | (490,684) | ​ | (70,167)
Impairment charges |  | (7,785) | ​ | (7,785) | ​ | (1,113)
​ |  | 3,704,325 | ​ | 3,724,665 | ​ | 532,620
​ Depreciation expenses were RMB82,124, RMB84,775and RMB103,508 (US$14,801) for the years ended December 31, 2023, 2024 and 2025, respectively. Impairment loss of RMB nil, nil and nil were recognized for network operating segment and impairment loss of nil, nil and nil for hospital operating segment for the years ended December 31, 2023, 2024 and 2025, respectively. For the years ended December 31, 2023, 2024 and 2025, impairment of RMB7,138, RMB1,225 and nil was written off for network operating segment upon the disposal of medical equipment and construction project. Impairment of nil, nil and nil was written off for hospital operating segment upon the termination of construction project. The Group held equipment under operating lease contracts with customers with an original cost of RMB111,017 and RMB89,780 (US$12,300) and accumulated depreciation of RMB92,448 and RMB63,400 (US$8,686), as of December 31, 2024 and 2025, respectively. The total net book value of the Group’s property, plant and equipment pledged as collateral for other borrowings as of December 31, 2024 and 2025 was RMB576,261 and RMB526,693 (US$75,316) (note 19), respectively. The total net book value of the Group’s construction in progress pledged to secure bank and other borrowings as of December 31, 2024 and 2025 was RMB1,814,768 and RMB1,991,611 (US$284,797) (note 19), respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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