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Property and Equipment, Net | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
Property and equipment, net |
5 | Property and equipment, net
Property and equipment consist of the following:
|  | As of December 31, |
|  | 2020 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | US$ |
Office furniture and equipment |  |  | 4,414 |  |  |  | 4,744 |  |  |  | 744 |
Computer equipment and servers |  |  | 162,587 |  |  |  | 163,392 |  |  |  | 25,640 |
Leasehold improvements |  |  | 100 |  |  |  | 5,451 |  |  |  | 855 |
Construction-in progress |  |  | 2,840 |  |  |  | 85 |  |  |  | 13 |
Less: Accumulated depreciation and impairment |  |  | (96,419 | ) |  |  | (111,493 | ) |  |  | (17,495 | )
Total property and equipment, net |  |  | 73,522 |  |  |  | 62,179 |  |  |  | 9,757 |
The Company recognized impairment charges on property and equipment of RMB10,952 for the year ended December 31, 2020, which was a result of the Company’s “Going-Cloud” project undertaken. No impairment loss charges were recognized on property and equipment for the years ended December 31, 2019 and 2021. Depreciation expense recognized for the years ended December 31, 2019, 2020 and 2021 were RMB30,059, RMB37,704 and RMB27,337 (US$4,290), respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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