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v3.20.1

Property, Equipment and Software, Net | 12 Months Ended
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Dec. 31, 2019
Property, Equipment and Software, Net |
Property, Equipment and Software, Net | 6. Property, Equipment and Software, Net ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | As of December 31,
​ |  | 2018 |  | 2019 |  | 2019
​ | ​ | RMB | ​ | RMB | ​ | US$
At cost: | ​ | ​ | ​ | ​ | ​ | ​
Computer, office equipment and purchased software | ​ | 27,148 |  | 49,129 |  | 7,057
Leasehold improvement | ​ | 10,654 | ​ | 18,826 | ​ | 2,704
​ | ​ | 37,802 | ​ | 67,955 | ​ | 9,761
Less: accumulated depreciation | ​ | (8,727) |  | (26,682) |  | (3,833)
​ | ​ | 29,075 |  | 41,273 |  | 5,928
​ For the years ended December 31, 2017, 2018 and 2019, the Group recorded depreciation expenses of RMB2,265, RMB5,934 and RMB18,098 (US$2,600), respectively, and were included in the following captions: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the years ended December 31,
​ |  | 2017 | ​ | 2018 |  | 2019 |  | 2019
​ | ​ | RMB | ​ | RMB | ​ | RMB | ​ | US$
Costs of revenues | ​ | 553 | ​ | 1,291 |  | 3,603 |  | 518
Sales and marketing expenses | ​ | 546 | ​ | 805 |  | 2,415 |  | 347
General and administrative expenses | ​ | 181 | ​ | 1,074 |  | 1,901 |  | 273
Research and development expenses | ​ | 985 | ​ | 2,764 |  | 10,179 |  | 1,462
​ | ​ | 2,265 | ​ | 5,934 |  | 18,098 |  | 2,600
​

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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