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COMMITMENTS AND CONTINGENCY - Purchase commitment (Details) - Jun. 30, 2023 - Purchase Commitment
CNY (¥)
USD ($)
Purchase commitment    
2024 ¥ 22,395,958 $ 3,088,544
2025 300,000 41,372
2026 150,000 20,686
Total minimum payments required ¥ 22,845,958 $ 3,150,602