Bank Loans - Short-term bank loans (Details)	12 Months Ended
Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Bank Loans
Short-term bank loans	¥ 356,000,000		¥ 150,000,000		$ 55,864,168	$ 150,000,000
Weighted average interest rates	4.71%		4.60%		4.71%	4.60%
Repayments of short-term bank loans	¥ 240,000,000	$ 37,661,237	¥ 76,000,000	$ 11,926,058
Time deposits pledged for repayments of short-term bank loans	¥ 80,000,000				$ 12,553,746

Represents the amount of time deposits pledged for repayments of short-term bank loans.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

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+ Details

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Balance Type:	credit
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

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