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Summary of Significant Accounting Policies - Schedule of Customer Operating Revenue (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥)
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 2,630,707 | $ 370,527 | ¥ 2,801,768 | ¥ 3,205,914
Revenue Benchmark | Concentration of Credit Risk |  |  |  |
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 680,959 |  | ¥ 992,055 | ¥ 930,786
Percentage of concentration of credit risk | 25.89% | 25.89% | 35.41% | 29.03%
Customer A | Revenue Benchmark | Concentration of Credit Risk |  |  |  |
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 215,851 |  | ¥ 231,026 | ¥ 457,995
Percentage of concentration of credit risk | 8.21% | 8.21% | 8.25% | 14.29%
Customer B | Revenue Benchmark | Concentration of Credit Risk |  |  |  |
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 112,403 |  | ¥ 320,660 | ¥ 367,434
Percentage of concentration of credit risk | 4.27% | 4.27% | 11.44% | 11.46%
Customer C | Revenue Benchmark | Concentration of Credit Risk |  |  |  |
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 153,121 |  | ¥ 357,202 | ¥ 104,928
Percentage of concentration of credit risk | 5.82% | 5.82% | 12.75% | 3.27%
Customer D | Revenue Benchmark | Concentration of Credit Risk |  |  |  |
Significant Risk and Uncertainties |  |  |  |
Operating revenue | ¥ 199,584 |  | ¥ 83,167 | ¥ 429
Percentage of concentration of credit risk | 7.59% | 7.59% | 2.97% | 0.01%

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