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Condensed financial information of the parent company (Tables)

12 Months Ended

Dec. 31, 2024

Condensed financial information of the parent company

Schedule of condensed financial information of the parent company - condensed balance sheets

​

​	​	​	​	​	​	​
​	​	As of December 31,
​	​	2023	​	2024
​		RMB		RMB		US$
ASSETS:	​	​	​	​	​	​
Current assets:	​	​	​	​	​	​
Cash and cash equivalents		413,317,806		305,194,205		41,811,435
Short-term investments		78,808,890		698,152,621		95,646,517
Time and Structured deposits	​	—	​	380,047,326	​	52,066,270
Short-term amounts due from intercompanies		687,538,024		440,259,744		60,315,338
Other current assets	​	—	​	14,670	​	2,010
Total current assets		1,179,664,720		1,823,668,566		249,841,570
Non-current assets:		​		​		​
Investments in subsidiaries, VIEs and VIEs’ subsidiaries		10,520,530,855		10,211,096,821		1,398,914,529
Total non-current assets		10,520,530,855		10,211,096,821		1,398,914,529
TOTAL ASSETS		11,700,195,575		12,034,765,387		1,648,756,099

​

​	​	​	​	​	​	​
​	​	As of December 31,
​	​	2023	​	2024
​		RMB		RMB		US$
LIABILITIES AND SHAREHOLDERS’ EQUITY:	​	​	​	​	​	​
Current liabilities:	​	​	​	​	​	​
Short-term borrowings	​	—	​	720,000,000	​	98,639,596
Accrued expenses and other intercompanies	​	8,364,603	​	19,456,357	​	2,665,510
Short-term amounts due to related parties	​	3,880,000	​	3,880,000	​	531,558
Total current liabilities	​	12,244,603	​	743,336,357	​	101,836,664
Non-current liabilities	​	​	​	​	​	​
TOTAL LIABILITIES	​	12,244,603	​	743,336,357	​	101,836,664
Commitments and contingencies	​	​	​	​	​	​
Shareholders’ equity	​	​	​	​	​	​
Class A Ordinary shares (US$0.0001 par value; 656,508,828 shares authorized, 201,304,881 shares issued and 137,109,719 shares outstanding, as of December 31, 2023; 656,508,828 shares authorized, 201,304,881 shares issued and 105,198,013 shares outstanding, as of December 31, 2024)	​	132,052	​	132,052	​	18,091
Class B Ordinary shares (US$0.0001 par value; 63,491,172 shares authorized, 63,491,172 shares issued and outstanding, as of December 31, 2023 and 2024)	​	43,836	​	43,836	​	6,006
Treasury shares	​	(899,627,520)	​	(1,419,285,878)	​	(194,441,368)
Additional paid-in capital	​	4,033,145,746	​	4,026,668,369	​	551,651,305
Accumulated other comprehensive loss	​	(24,130,903)	​	13,751,495	​	1,883,947
Retained earnings	​	8,578,387,761		8,670,119,156	​	1,187,801,454
Total shareholders’ equity		11,687,950,972		11,291,429,030	​	1,546,919,435
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY		11,700,195,575		12,034,765,387		1,648,756,099

Schedule of condensed financial information of the parent company - condensed statements of comprehensive income/(loss)

​

​	​	​	​	​	​	​	​	​
​	​	For the years ended December 31,
​	​	2022	​	2023	​	2024
​		RMB		RMB		RMB		US$
Share-based compensation expense		(24,053,760)		(4,935,782)		(2,257,795)		(309,317)
General and administrative		(26,199,820)		(19,070,062)		(40,780,739)		(5,586,938)
Interest and investment income/(loss), net		(13,148,315)		104,687,566		189,674,053		25,985,239
Other non-interest income		11,548,297		28,626,092		24,463,472		3,351,482
Foreign exchange gain/(loss), net		404,232		(545,948)		20,792,611		2,848,576
Income from the repurchase of convertible senior notes		10,028,456		—		—		—
Share of loss in subsidiaries, VIEs and VIEs’ subsidiaries		(320,543,213)		(69,628,327)		(100,160,207)		(13,721,893)
Net income before income taxes		(361,964,123)		39,133,539		91,731,395		12,567,149
Income tax expense		—		—		—		—
Net income/(loss)		(361,964,123)		39,133,539		91,731,395		12,567,149
Other comprehensive income		​		​		​		​
Foreign currency translation adjustment	​	13,036,988	​	21,829,283	​	37,882,398	​	5,189,867
Total comprehensive income/(loss)		(348,927,135)		60,962,822		129,613,793		17,757,016

Schedule of condensed financial information of the parent company - condensed statements of cash flows

​

​	​	​	​	​	​	​	​	​
​	​	For the years ended December 31,
​	​	2022	​	2023	​	2024
​	​	RMB	​	RMB	​	RMB	​	US$
Cash flows from operating activities:
Net income/(loss)		(361,964,123)		39,133,539		91,731,395		12,567,149
Adjustments to reconcile net income to net cash used in operating activities:	​	​	​	​	​	​	​	​
Share of loss in subsidiaries, VIEs and VIEs’ subsidiaries		320,543,213		69,628,327		100,160,207		13,721,893
Share-based compensation expense		24,053,760		4,935,782		2,257,795		309,317
Income from the repurchase of convertible senior notes		(10,028,456)		—		—		—
Accrued interest of convertible senior notes		1,732,915		—		—		—
Investment loss of short-term Investments		67,907,228		138,739,373		1,925,270		263,761
Foreign exchange loss/(gain) net		(404,232)		545,948		(20,792,611)		(2,848,576)
Payables to employee		66,077		405,208		4,893,049		670,345
Other payables		2,937,392		2,935,558		10,942,366		1,499,098
Net cash provided by operating activities		44,843,774		256,323,735		191,117,471		26,182,987
Net cash provided by (used in) investing activities	​	908,576,201	​	29,180,599	​	(523,283,656)	​	(71,689,567)
Net cash provided by (used in) financing activities	​	(834,990,790)	​	(420,660,054)	​	186,843,558	​	25,597,462
Effect of exchange rate changes on cash and cash equivalents	​	(117,327,970)	​	(10,899,643)	​	37,199,026	​	5,096,246
Net increase (decrease) in cash and cash equivalents	​	1,101,215	​	(146,055,363)	​	(108,123,601)	​	(14,812,872)
Cash and cash equivalents at beginning of the year	​	558,271,954	​	559,373,169	​	413,317,806	​	56,624,307
Cash and cash equivalents at end of the year		559,373,169		413,317,806		305,194,205		41,811,435

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- Definition

Tabular disclosure of condensed statement of comprehensive income (loss) including, but not limited to, statements of comprehensive income (loss) of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 04
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- Definition

Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 04
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- Definition

Tabular disclosure of condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 04
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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