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ACQUISITIONS AND DISPOSALS - Additional Information (Details) ¥ in Thousands, $ in Thousands |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |
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May 23, 2025 CNY (¥) | May 23, 2025 USD ($) | Jun. 28, 2024 | Dec. 27, 2023 CNY (¥) | Dec. 27, 2023 USD ($) | Dec. 27, 2023 HKD ($) | Mar. 01, 2023 CNY (¥) | Mar. 01, 2023 USD ($) | Dec. 31, 2025 CNY (¥) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2025 USD ($) | Jun. 30, 2025 CNY (¥) | Jun. 30, 2025 USD ($) | Jun. 24, 2025 CNY (¥) | Jun. 24, 2025 USD ($) | Apr. 30, 2025 CNY (¥) | Apr. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 04, 2024 | Apr. 26, 2024 CNY (¥) | Apr. 26, 2024 USD ($) | Apr. 25, 2024 CNY (¥) | Apr. 25, 2024 USD ($) | Dec. 28, 2023
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | ¥ 572,216 |  | ¥ 572,216 |  | ¥ 575,427 | $ 81,826 |  |  |  |  |  |  | $ 81,826 |  |  |  |  |  |
Goodwill impairment charges |  |  |  |  |  |  |  |  | 0 | $ 0 | 0 | $ 0 | ¥ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beijing Proton Medical Center Co., Ltd. ("BPMC") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest in equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54.01%
New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |
Datong Meizhongjiahe | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  | ¥ 71 | $ 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
King Cheers | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  | ¥ (709) | $ (100) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guangzhou Proton Medical Technology Services Co., Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 24,688 |  |  |  |  |  |  |  |
Guangzhou Proton Medical Technology Services Co., Ltd | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,530 |  |  |  |  |  |  |
Shanghai Xinhe Enterprise Management Center (Limited Partnership) ("Shanghai Xinhe") | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 60,000 | $ 8,580 | ¥ 60,000 | $ 8,580 |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  | ¥ 37,552 | $ 5,370 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guangzhou Yicheng Biological Immune Technology Co. LTD("Guangzhou Yicheng") | Other than sale not discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain | ¥ 81 | $ 12 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beijing Proton Medical Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of share consideration |  |  |  | 25.00% | 25.00% | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, consideration transferred | $ |  |  |  |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guangzhou Swallowing Home Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1,945 | $ 267 |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  |  |  | ¥ 2,486 | $ 341 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |
Percentage of interest held after disposal |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration amounts outstanding |  |  |  |  |  |  |  |  |  |  | ¥ 1,945 |  |  |  |  |  |  |  |  |  | $ 267 |  |  |  |  |  |
Guangzhou Yipusheng Health Management Co., Ltd. | DTMZ | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 10,000 | $ 1,370 |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  |  |  | ¥ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guangzhou Yipusheng Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  |  |  | ¥ 120 | $ 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Medstar Guangzhou Medical Technology Services Ltd [Member] | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  | ¥ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
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