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v3.24.1

Financial information of the parent company (Details 1) | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CNY (¥)
OPERATING EXPENSES |  |  |  |  |  |
Total operating expenses | $ 21,454,984 | ¥ 151,186,841 |  | ¥ 361,596,902 |  | ¥ 171,177,307
NET INCOME | (11,578,184) | (81,587,998) | $ (20,279,224) | (136,458,901) | $ 12,750,031 | 81,244,474
FOREIGN CURRENCY TRANSLATION ADJUSTMENT | 257,860 | 1,817,059 |  | 995,415 |  | (32,022)
COMPREHENSIVE INCOME | (11,291,129) | (79,565,214) |  | (135,755,473) |  | ¥ 81,212,518
Parent Company [Member] |  |  |  |  |  |
OPERATING EXPENSES |  |  |  |  |  |
General and administrative | (4,480,600) | (32,164,435) |  | (28,968) |  |
Total operating expenses | (4,480,600) | (32,164,435) |  | (28,968) |  |
Equity income (loss) of subsidiaries | (16,111,711) | (114,125,394) |  | (140,903,197) |  |
Total other income (expense), net | (16,111,711) | (114,125,394) |  | (140,903,197) |  |
CHANGE IN FAIR VALUE OF WARRANT LIABILITIES | 52,927 | 372,961 |  | 4,415,328 |  |
NET INCOME | (11,578,184) | (81,587,998) |  | (136,458,901) |  |
FOREIGN CURRENCY TRANSLATION ADJUSTMENT | 257,860 | 1,817,059 |  | 995,415 |  |
COMPREHENSIVE INCOME | $ (11,320,324) | ¥ (79,770,939) |  | ¥ (135,463,486) |  |

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