v3.26.3
COMMITMENTS AND CONTINGENCY - Purchase commitment (Details) - Jun. 30, 2026 - Purchase Commitment
CNY (¥)
USD ($)
Purchase commitment    
2027 ¥ 29,572,996 $ 4,358,520
2028 300,000 44,215
2029 300,000 44,215
2030 300,000 44,215
2031 150,000 22,107
Total minimum payments required ¥ 30,622,996 $ 4,513,272