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Earnings Per Share/ADS (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Earnings Per Share | Basic and diluted earnings per share for each of the years presented are calculated as follows:
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to ordinary shareholders |  |  | 3,199,966 |  |  |  | 3,405,229 |  |  |  | 2,148,566 |  |  |  | 337,157 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average ordinary shares outstanding |  |  | 474,328,384 |  |  |  | 477,467,268 |  |  |  | 499,861,764 |  |  |  | 499,861,764 |
Basic earnings per share |  |  | 6.75 |  |  |  | 7.13 |  |  |  | 4.30 |  |  |  | 0.67 |
Diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to ordinary shareholders |  |  | 3,199,966 |  |  |  | 3,405,229 |  |  |  | 2,148,566 |  |  |  | 337,157 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average ordinary shares outstanding |  |  | 474,328,384 |  |  |  | 477,467,268 |  |  |  | 499,861,764 |  |  |  | 499,861,764 |
Dilutive effect of share-based awards |  |  | 3,732,604 |  |  |  | 2,219,112 |  |  |  | 619,776 |  |  |  | 619,776 |
Weighted average number of shares outstanding-diluted |  |  | 478,060,988 |  |  |  | 479,686,380 |  |  |  | 500,481,540 |  |  |  | 500,481,540 |
Diluted earnings per share |  |  | 6.69 |  |  |  | 7.10 |  |  |  | 4.29 |  |  |  | 0.67 |
Earnings per ADS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income per ADS – basic (RMB) |  |  | 26.99 |  |  |  | 28.53 |  |  |  | 17.19 |  |  |  | 2.70 |
Net income per ADS – diluted (RMB) |  |  | 26.77 |  |  |  | 28.40 |  |  |  | 17.17 |  |  |  | 2.69 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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