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9. FAIR VALUE MEASUREMENTS (Details) - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Money Market Account $ 59,730,428 $ 82,406,697
Level 1    
Money Market Account 59,730,428 82,406,697
Level 2    
Money Market Account 0 0
Level 3    
Money Market Account $ 0 $ 0