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Leases (Details) - CNY (¥)
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Leases [Line Items]    
Operating lease expense ¥ 1,396,169 ¥ 1,779,871
Minimum [Member]    
Leases [Line Items]    
Operating lease term 24 months  
Maximum [Member]    
Leases [Line Items]    
Operating lease term 26 months