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LEASE (Schedule of Estimated Annual Amortization Expenses) (Details) - Dec. 31, 2019
¥ in Thousands, $ in Thousands
USD ($)
CNY (¥)
Lease    
2020 $ 1,359 ¥ 9,462
2021 1,359 9,462
2022 1,359 9,462
2023 1,359 9,462
2024 $ 1,359 ¥ 9,462