LEASES - Net Value of Leased Assets (Details)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 CNY (¥)
Sale Leaseback Transaction [Line Items]
Equipment	¥ 12,899,352,492		¥ 10,116,744,866
Less: accumulated depreciation	(3,497,199,736)		(3,087,018,295)
Net Value	10,208,204,549	$ 1,466,316,836	8,275,899,684
Leased Assets [Member]
Sale Leaseback Transaction [Line Items]
Equipment	1,510,944,643		936,961,787
Less: accumulated depreciation	(251,231,428)		(116,935,527)
Net Value	¥ 1,259,713,215		¥ 820,026,260

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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