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INTANGIBLE ASSETS, NET - Summary (Details)	12 Months Ended
	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2023 USD ($)
INTANGIBLE ASSETS, NET
Gross carrying amount	¥ 14,900,551	¥ 14,747,462
Accumulated amortization	(13,594,150)	(12,890,142)
Net carrying amount	1,306,401	1,857,320	$ 184,003
Trademarks
INTANGIBLE ASSETS, NET
Gross carrying amount	9,130,529	8,983,153
Accumulated amortization	(8,976,570)	(8,503,451)
Net carrying amount	¥ 153,959	¥ 479,702
Trademarks | Maximum
INTANGIBLE ASSETS, NET
Intangible assets, amortization period	10 years	10 years
Trademarks | Minimum
INTANGIBLE ASSETS, NET
Intangible assets, amortization period	5 years	5 years
Domain name
INTANGIBLE ASSETS, NET
Gross carrying amount	¥ 3,826,626	¥ 3,820,913
Accumulated amortization	(3,655,316)	(3,618,766)
Net carrying amount	¥ 171,310	¥ 202,147
Domain name | Maximum
INTANGIBLE ASSETS, NET
Intangible assets, amortization period	10 years	10 years
Domain name | Minimum
INTANGIBLE ASSETS, NET
Intangible assets, amortization period	5 years	5 years
License
INTANGIBLE ASSETS, NET
Intangible assets, amortization period	10 years	10 years
Gross carrying amount	¥ 1,943,396	¥ 1,943,396
Accumulated amortization	(962,264)	(767,925)
Net carrying amount	¥ 981,132	¥ 1,175,471

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(16))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

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