| Schedule of accrued expenses and other current liabilities |
| | | | | | | | | As of December 31, | | | 2024 | | 2025 | | | RMB | | RMB | | US$ | Accrued payroll | | 7,290,249 | | 1,428,821 | | 204,319 | Tax payables | | 3,758,066 | | 6,816,712 | | 974,777 | Payable to suppliers | | 115,793,122 | | 153,182,488 | | 21,904,804 | Payable to external service providers | | 19,447,813 | | 20,839,700 | | 2,980,037 | Payable to funding partner | | 50,365,126 | | 50,013,688 | | 7,151,862 | Business deposits | | 5,593,315 | | 5,493,315 | | 785,534 | Others | | 59,830,173 | | 52,476,646 | | 7,504,061 | Total | | 262,077,864 | | 290,251,370 | | 41,505,394 |
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