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ACQUISITIONS - Citigo acuquisition and Other acquisitions (Details) - CNY (¥) ¥ in Millions |  | 5 Months Ended | 9 Months Ended
--- | --- | --- | ---
Apr. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
CitiGo Hotels |  |  |  |
Acquisitions |  |  |  |
Percentage of ownership interest acquired | 100.00% |  |  |
Aggregated consideration | ¥ 783 |  |  |
Cash consideration |  | ¥ 749 |  |
Other acquisitions |  |  |  |
Acquisitions |  |  |  |
Cash consideration |  |  | ¥ 9 | ¥ 51

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