| Schedule of intangible assets, net |
| | | | | | | | | As of | | As of | | As of | | | December 31, | | June 30, | | June 30, | | | 2025 | | 2026 | | 2026 | | | RMB | | RMB | | US$ | Software purchased | | 5,606,954 | | 53,781,164 | | 7,926,363 | Copyrights purchased | | 20,207,547 | | 56,643,425 | | 8,348,208 | Subtotal | | 25,814,501 | | 110,424,589 | | 16,274,571 | Less: accumulated amortization | | (1,771,321) | | (3,151,515) | | (464,476) | Intangible assets, net | | 24,043,180 | | 107,273,074 | | 15,810,095 |
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| Schedule of amortization amount of intangible assets |
The following is a schedule, by fiscal years, of amortization amount of intangible assets as of June 30, 2026: | | | | | | | Intangible assets | | | RMB | | US$ | 2027 | | 11,043,408 | | 1,627,597 | 2028 | | 11,041,668 | | 1,627,340 | 2029 | | 11,041,510 | | 1,627,317 | 2030 | | 11,041,510 | | 1,627,317 | 2031 and thereafter | | 63,104,978 | | 9,300,524 | Total | | 107,273,074 | | 15,810,095 |
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