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LEASES - Additional information (Details) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Jun. 30, 2021 CNY (¥) | Jul. 01, 2019 CNY (¥) | Jul. 01, 2019 USD ($)
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Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating lease right-of-use assets (including 352,775 and 119,029 ($18,423) from a related party as of June 30, 2021 and December 31, 2021, respectively) | ¥ 6,084,606 | $ 956,486 | ¥ 7,925,930 |  |
Operating Lease, liabilities | ¥ 6,207,561 | $ 975,814 | ¥ 7,018,933 |  |
ASU 2016-02 | Restatement |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating lease right-of-use assets (including 352,775 and 119,029 ($18,423) from a related party as of June 30, 2021 and December 31, 2021, respectively) |  |  |  | ¥ 1,228,963 | $ 193,190
Operating Lease, liabilities |  |  |  | ¥ 1,228,963 | $ 193,190
Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 1 year | 1 year |  |  |
Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 3 years | 3 years |  |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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