XML 74 R52.htm IDEA: XBRL DOCUMENT v3.25.1

Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-based compensation

Summary of share option activity

​

​	​	​	​	​	​	​	​	​	​	​
​		​	​	​		​		Weighted		​
​	​	​	​	​	​	​	​	average	​	​
​	​	​	​	​	​	​	​	remaining	​	Aggregated
​	​	​		Weighted average	​	Weighted average	​	contractual	​	intrinsic
​	​	Number of options	​	exercise price	​	grant date fair value	​	term	​	value
​	​	​	​	RMB	​	RMB	​	Years	​	RMB
Balance, December 31, 2022	​	9,461,786	​	—	​	17.26	​	5.31	​	61,990,313
Exercised	​	(274,925)	​	—	​	11.12	​	—	​	3,601,562
Forfeited	​	(12,500)	​	—	​	19.86	​	—	​	—
Balance, December 31, 2023		9,174,361		—		17.44		4.32		132,873,059
Exercised		(254,326)		—		28.02		2.93		3,938,396
Forfeited		—		—		—		—		—
Balance, December 31, 2024		8,920,035		—		33.17		3.42		183,603,721
Vested and Exercisable as of December 31, 2024		8,920,035		—		33.17		3.42		183,603,721

Summary of allocated share-based compensation expense

​

​	​	​	​	​	​	​	​	​
​	​	For the years ended December 31,
​	​	2022	​	2023	​	2024
​		RMB		RMB		RMB		US$
Sales and marketing	​	527,537	​	265,862	​	299,806	​	41,073
General and administrative	​	21,102,104	​	4,649,664	​	1,754,168	​	240,320
Research and development	​	2,424,119	​	20,256	​	203,821	​	27,924
​	​	24,053,760	​	4,935,782	​	2,257,795	​	309,317

​

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration