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Income Taxes - Summary of Principal Components of Deferred Tax Assets and Liabilities (Detail) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Non-current deferred tax assets |  |  |
Risk assurance liabilities | ¥ 276,221,432 | $ 43,345,170 | ¥ 223,500,138
Provision for credit losses | 194,973,439 | 30,595,587 | 55,584,637
Customer advances | 5,552,404 | 871,293 | 5,687,968
Donation | 0 | 0 | 125,000
Fair value change on derivative instruments | 1,336,597 | 209,741 | 0
Net operating loss carry-forward | 16,959,870 | 2,661,374 | 65,558,135
Less: valuation allowance | (16,959,870) | (2,661,374) | (7,148,961)
Non-current deferred tax assets, net | 485,579,491 | 76,198,017 | 343,306,917
Non-current deferred tax liabilities |  |  |
Acquisition of insurance brokerage license | (10,724,126) | (1,682,849) | (10,724,126)
Unrealized gain on long-term investment | (11,009,130) | (1,727,573) | (11,009,130)
Contract assets | 7,495,619 | 1,176,226 | 0
Contract assets | 0 | 0 | (162,308,288)
Withholding tax | (40,746,914) | (6,394,080) | (319,079,320)
Non-current deferred tax liabilities | ¥ (62,480,170) | $ (9,804,502) | ¥ (503,120,864)

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