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Condensed Financial Information of the Parent Company - Condensed Statements of Comprehensive Income (Detail) | 12 Months Ended
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Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥)
Condensed Statement of Income Captions [Line Items] |  |  |  |
General and administrative | ¥ (276,179,441) | $ (43,338,581) | ¥ (265,691,411) | ¥ (236,551,077)
Foreign exchange (loss) | 1,351,400 | 212,064 | (8,848,354) | 5,141,112
Net gain (loss) on equity securities | (12,991,522) | (2,038,654) | 3,353,381,213 | 86,011,918
Income from equity method investments | 0 | 0 | 0 | (926,205)
Other income, net | 41,911,589 | 6,576,843 | 49,139,337 | 41,300,464
Other expense | 6,605,833 | 1,036,599 | 838,115 | 5,121,054
Net income (loss) before income taxes | 12,308,294 | 1,931,441 | 3,743,273,711 | 487,819,233
Income tax expense | (20,852,646) | (3,272,235) | (369,853,650) | (82,960,493)
Net income (loss) | (8,544,352) | (1,340,794) | 3,373,420,061 | 404,858,740
Other comprehensive income (loss), net of tax | (72,130,683) |  | (234,817,165) | 9,977,742
Total comprehensive income (loss), net of tax | (80,675,035) | (12,659,672) | 3,138,602,896 | 414,836,482
Parent Company [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
General and administrative | (10,079,685) | (1,581,723) | (11,854,536) | (10,164,242)
Interest Income | 4,440,117 | 696,751 | 1,889,711 | 4,831,112
Foreign exchange (loss) | (390,858) | (61,334) | (706,543) | (26,334)
Net gain (loss) on equity securities | (27,278,116) | (4,280,532) | 3,315,475,734 |
Income from equity method investments | 29,054,673 | 4,559,312 | 59,992,497 | 396,273,356
Other income, net | 1,928,027 | 302,550 | 4,725,168 |
Other expense | (6,218,510) | (975,818) | (4,184) |
Net income (loss) before income taxes | (8,544,352) | (1,340,794) | 3,369,517,847 | 390,913,892
Income tax expense | 0 | 0 |  |
Net income (loss) | (8,544,352) | (1,340,794) | 3,369,517,847 | 390,913,892
Other comprehensive income (loss), net of tax | (72,130,683) | (11,318,878) | (234,817,165) | 9,977,742
Total comprehensive income (loss), net of tax | ¥ (80,675,035) | $ (12,659,672) | ¥ 3,134,700,682 | ¥ 400,891,634

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