| Schedule of provision for/(reversal of) expected credit losses for receivables and other assets |
| | | | | | | | | | | For the years ended December 31, | | | 2023 | | 2024 | | 2025 | | | RMB | | RMB | | RMB | | US$ | Collection of return of finance lease receivables | | (4,954,732) | | (2,848,564) | | (1,946,105) | | (278,289) | Expected credit loss/(reversal) for accounts receivables | | 199,711 | | 105,538 | | (281,983) | | (40,323) | Expected credit loss/(reversal) for other current assets | | 29,314,107 | | (14,764,657) | | 4,822,880 | | 689,663 | Expected credit loss/(reversal) for other non-current assets | | 94,462 | | (1,108,096) | | (473,144) | | (67,659) | Total | | 24,653,548 | | (18,615,779) | | 2,121,648 | | 303,392 |
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