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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%

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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-Publisher FASB
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

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-SubTopic 20
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Amount of lessee's right to use underlying asset under operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average discount rate for operating lease calculated at point in time.

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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.

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