The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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INTANGIBLE ASSETS, NET (Details)	12 Months Ended
INTANGIBLE ASSETS, NET (Details)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Less: accumulated amortization	¥ (29,689,551)		¥ (22,234,024)
Intangible assets, net	35,837,648		36,395,056		$ 5,492,360
Amortization of intangible assets	10,176,591	$ 1,559,631	6,822,339	¥ 4,212,569
Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	1,581,860		4,653,340
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	¥ 63,945,339		¥ 53,975,740