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Other Income, Net - Schedule of Other 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 (¥)
Other Non Operating Income [Line Items] |  |  |  |
Other income, net | ¥ 41,911,589 | $ 6,576,843 | ¥ 49,139,337 | ¥ 41,300,464
Government Subsidy [Member] |  |  |  |
Other Non Operating Income [Line Items] |  |  |  |
Other income, net | 35,384,908 | 5,552,664 | 35,888,591 | 36,769,550
Other [Member] |  |  |  |
Other Non Operating Income [Line Items] |  |  |  |
Other income, net | ¥ 6,526,681 | $ 1,024,179 | ¥ 13,250,746 | ¥ 4,530,914

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- Definition Amount of income (expense) related to nonoperating activities, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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