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INTANGIBLE ASSETS, NET (Details) - Expected amortization of intangible assets
May 31, 2020
USD ($)
Expected amortization of intangible assets [Abstract]  
2021 $ 18,112
2022 8,503
2023 6,211
2024 6,136
2025 5,219
Thereafter 124,474
Total $ 168,655