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Summary of Principal Accounting Policies - Summary of Maximum Exposure to Loss Associated with Identified Nonconsolidated VIEs (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Nonconsolidated VIEs |  |  |
Maximum exposure to loss in non-consolidated VIEs | ¥ 537,555 | $ 84,354 | ¥ 646,352
Liabilities | 2,748,148 | 431,244 | 2,122,215
Amount due from related parties |  |  |
Nonconsolidated VIEs |  |  |
Maximum exposure to loss in non-consolidated VIEs | 40,401 | 6,340 | 47,024
Investments Member |  |  |
Nonconsolidated VIEs |  |  |
Maximum exposure to loss in non-consolidated VIEs | 497,154 | $ 78,014 | 599,328
Nonconsolidated VIEs |  |  |
Nonconsolidated VIEs |  |  |
Liabilities | 0 |  | 0
Contingent liabilities | 0 |  | 0
Guarantees (implicit or explicit) | ¥ 0 |  | ¥ 0

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