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PRE-OPENING EXPENSES (Details)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
PRE-OPENING EXPENSES        
Rents ¥ 30   ¥ 84 ¥ 68
Personnel costs 1   5 5
Others 4   6 8
Total ¥ 35 $ 5 ¥ 95 ¥ 81