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STOCK-BASED COMPENSATION - Additional Information (Details) |  |  |  |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended |
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Dec. 10, 2021 $ / shares shares | Dec. 05, 2021 USD ($) shares | Nov. 10, 2021 shares | Aug. 21, 2018 $ / shares shares | Oct. 13, 2017 USD ($) $ / shares shares | Oct. 13, 2017 $ / shares | Aug. 27, 2018 shares | Aug. 21, 2018 USD ($) $ / shares shares | Dec. 31, 2021 CNY (¥) shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 CNY (¥) shares | Jun. 30, 2020 shares | Dec. 31, 2021 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeiture |  |  |  | 487,057 |  |  |  |  |  |  |  |  |
Starry |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares | $ 1.60 |  |  |  |  |  |  |  |  |  |  |  | $ 1.31
Restricted shares issued for services (in shares) |  |  | 500,000 |  |  |  |  |  |  |  |  |  |
October 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exercisable Options, Average Remaining Contractual life (years) |  |  |  |  |  | 3 years |  |  |  |  |  |  |
August 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exercisable Options, Average Remaining Contractual life (years) |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  |  |  |  |  |  | 128,672 |  | 0 |  |
Stock Option |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock or Unit Option Plan Expense | ¥ |  |  |  |  |  |  |  |  | ¥ 0 |  | ¥ 0 |  |
Share-based Compensation | ¥ |  |  |  |  |  |  |  |  | 0 |  |  |  |
Restricted shares |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock or Unit Option Plan Expense |  |  |  |  |  |  |  |  | ¥ 27,375,871 | $ 4,303,423 | ¥ 3,403,513 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  | 3,000,000 | 3,000,000 |  | 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  | $ 4,175,000 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.67
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  | 2,500,000 |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | ¥ |  |  |  |  |  |  |  |  | ¥ 0 |  |  |  |
Restricted shares | October 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  | $ 919,800 |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  | $ 5.11 | $ 5.11 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  | 180,000 |  |  |  |  |  |  |  |
Restricted shares | August 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  |  |  |  | $ 2,523,240 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  | 391,200 |  |  |  |  |
Restricted Class A Ordinary Shares |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock or Unit Option Plan Expense |  |  |  |  |  |  |  |  | ¥ 4,631,063 | $ 727,992 |  |  |
Restricted shares issued for services (in shares) | 250,000 |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  | 250,000 |  |  |  |  |  |
Restricted Class A Ordinary Shares | August 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  | $ 6.45 |  |  |  | $ 6.45 |  |  |  |  |

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