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INTANGIBLE ASSETS, NET (Schedule of Estimated Annual Amortization Expenses) (Details) - Dec. 31, 2019
¥ in Thousands, $ in Thousands
USD ($)
CNY (¥)
INTANGIBLE ASSETS, NET    
2020 $ 2,192 ¥ 15,260
2021 2,781 19,358
2022 4,006 27,886
2023 3,970 27,640
2024 $ 3,963 ¥ 27,590