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SHORT-TERM BORROWINGS - Due to related party (Details) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Jun. 30, 2019 CNY (¥) | Dec. 31, 2019 CNY (¥)
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | $ 1,712,301 | ¥ 9,010,525 | ¥ 11,931,310
Short Term Borrowings One [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | 0 | ¥ 5,008,640 | 0
Debt Instrument, Maturity Date |  | Dec. 19, 2019 |
Debt Instrument, Interest Rate Percentage |  | 5.65% |
Short Term Borrowings Two [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | $ 574,324 | ¥ 4,001,885 | 4,001,885
Debt Instrument, Maturity Date | Mar. 27, 2020 |  |
Debt Instrument, Interest Rate Percentage | 5.65% |  |
Short Term Borrowings Three [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | $ 718,919 | 0 | 5,009,425
Debt Instrument, Maturity Date | Dec. 19, 2020 |  |
Debt Instrument, Interest Rate Percentage | 5.65% |  |
Short Term Borrowings Four [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | $ 64,581 | 0 | 450,000
Debt Instrument, Maturity Date | Sep. 24, 2020 |  |
Short Term Borrowings Five [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Total short-term borrowings due to related parties | $ 354,477 | ¥ 0 | ¥ 2,470,000
Debt Instrument, Maturity Date | Nov. 05, 2020 |  |

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