Other current liabilities - Schedule of other current liabilities (Details)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Other Liabilities, Current [Abstract]
Salary accrual	¥ 8,536,985		¥ 6,591,805
Deposit	10,000,000		0
Tax accrual	13,609,170		321,443
Others	7,253,377		4,509
Total	¥ 39,399,532	$ 5,657,111	¥ 6,917,757

Others liabilities current

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Name Accounting Standards Codification
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The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

+ References

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- Definition

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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- References

No definition available.

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