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INTANGIBLE ASSETS, NET (Details) - Expected amortization of intangible assets
May 31, 2021
USD ($)
Expected amortization of intangible assets [Abstract]  
2022 $ 21,846
2023 20,058
2024 20,058
2025 19,071
2026 18,975
Thereafter 194,822
Total $ 294,830