| Accounts receivable, net |
Note 6 — Accounts receivable, net Accounts receivable, net consisted of the following: | | | December 31, | | | June 30, | | | June 30, | | | | | 2025 | | | 2026 | | | 2026 | | | | | RMB | | | RMB | | | USD | | | Accounts receivable | | | 65,438,392 | | | | 46,574,715 | | | | 6,838,261 | | | Less: allowance of credit losses | | | (21,830,225 | ) | | | (21,175,170 | ) | | | (3,109,012 | ) | | Accounts receivable, net | | | 43,608,167 | | | | 25,399,545 | | | | 3,729,249 | | The following table summarizes the changes in allowance for credit losses: | | | December 31,
2025 | | | June 30,
2026 | | | June 30,
2026 | | | | | RMB | | | RMB | | | USD | | | Beginning balance | | | 24,105,435 | | | | 21,830,225 | | | | 3,353,380 | | | (Reversal of)/Allowance for credit losses | | | (253,023 | ) | | | 75,000 | | | | 11,012 | | | Deconsolidation of subsidiaries | | | (1,536,649 | ) | | | - | | | | - | | | Exchange rate difference | | | (485,538 | ) | | | (730,055 | ) | | | (255,380 | ) | | Ending balance | | | 21,830,225 | | | | 21,175,170 | | | | 3,109,012 | |
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