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OPERATING LEASE- Consolidated balancesheet information (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Lessee, Lease, Description [Line Items] |  |  |
Right-of-use assets | ¥ 5,420 | $ 851 | ¥ 11,324
Operating lease liabilities - current | 5,571 | 874 | 6,988
Operating lease liabilities – non-current | 3,123 | $ 490 | 8,309
Previous Lease Standard ("ASC 840") [Member] |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Right-of-use assets | 5,420 |  | 11,324
Operating lease liabilities - current | 5,571 |  | 6,988
Operating lease liabilities – non-current | 3,123 |  | 8,309
Total lease liabilities | ¥ 8,694 |  | ¥ 15,297
Weighted average remaining lease term | 1 year 7 months 9 days | 1 year 7 months 9 days | 1 year 8 months 12 days
Weighted average discount rate | 4.75% | 4.75% | 4.75%

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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