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Bank Borrowings (Details)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
Credit Facility Agreements [Member]      
Bank Borrowings [Line Items]      
Draw down borrowings ¥ 850,000,000 $ 10,000,000  
Unused credit limits under credit facility agreements ¥ 468,737,455 $ 10,000,000  
Minimum [Member] | Long-term Bank Borrowings [Member]      
Bank Borrowings [Line Items]      
Credit facility agreements bore interest rate 2.40% 2.40% 2.75%
Minimum [Member] | Long-term Bank Borrowings [Member]      
Bank Borrowings [Line Items]      
Credit facility agreements bore interest rate 4.20% 4.20% 4.00%
Maximum [Member] | Long-term Bank Borrowings [Member]      
Bank Borrowings [Line Items]      
Credit facility agreements bore interest rate 4.20% 4.20% 4.60%
Maximum [Member] | Long-term Bank Borrowings [Member]      
Bank Borrowings [Line Items]      
Credit facility agreements bore interest rate 4.60% 4.60% 4.60%