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CONVERTIBLE NOTES PAYABLE (Details) | Jan. 28, 2021 USD ($) shares | Nov. 25, 2020 USD ($) item $ / shares shares | Dec. 31, 2021 $ / shares | Jun. 30, 2021 $ / shares | Jun. 14, 2021 $ / shares | Apr. 05, 2021 $ / shares | Jun. 26, 2020 $ / shares | May 21, 2020 $ / shares
--- | --- | --- | --- | --- | --- | --- | --- | ---
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 4.35% |  |  |  |  |
Class A ordinary shares |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Common shares, par value (in dollars per share) |  |  | $ 0.0925 | $ 0.0925 | $ 0.0925 | $ 0.0925 | $ 0.0925 | $ 0.0925
Convertible Notes |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 12.00% |  |  |  |  |  |
Term of debt |  | 6 months |  |  |  |  |  |
Number of equal monthly payments to pay principal and interest on debt | item |  | 6 |  |  |  |  |  |
Convertible Notes | Class A ordinary shares |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Aggregate principal amount | $ |  | $ 6,485,000 |  |  |  |  |  |
Common shares, par value (in dollars per share) |  | $ 0.0925 |  |  |  |  |  |
Conversion price per ordinary share (in dollars per share) |  | $ 0.71 |  |  |  |  |  |
Maximum number of shares issuable | shares |  | 9,466,137 |  |  |  |  |  |
Shares issued upon conversion (in shares) | shares | 9,225,338 |  |  |  |  |  |  |
Principal and interests amount of debt converted | $ | $ 6,549,990 |  |  |  |  |  |  |

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