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Accounts Receivable, Net | 12 Months Ended
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Dec. 31, 2022
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] |
Accounts Receivable, Net |
5. | Accounts Receivable, Net
Accounts receivable, net, consisted of the following:
|  | As of December 31, |
|  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | US$ |
Accounts receivable |  |  | 125,606 |  |  |  | 135,678 |  |  |  | 19,671 |
Allowance for doubtful accounts |  |  | (69,417 | ) |  |  | (115,380 | ) |  |  | (16,728 | )
|  |  | 56,189 |  |  |  | 20,298 |  |  |  | 2,943 |
The movements in the allowance for doubtful accounts were:
|  | For the year ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Balance at the beginning of the year |  |  | (862 | ) |  |  | (10,051 | ) |  |  | (69,417 | ) |  |  | (10,064 | )
Additional provision charged to expense |  |  | (9,217 | ) |  |  | (59,347 | ) |  |  | (46,045 | ) |  |  | (6,676 | )
Foreign currency translation |  |  | 28 |  |  |  | (19 | ) |  |  | 82 |  |  |  | 12 |
Balance at the end of the year |  |  | (10,051 | ) |  |  | (69,417 | ) |  |  | (115,380 | ) |  |  | (16,728 | )

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- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI https://asc.fasb.org/topic&trid=2196771 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -URI https://asc.fasb.org/topic&trid=82887179 + Details
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- References No definition available. + Details
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