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Concentration (Details) - Schedule of total accounts receivable
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2022
USD ($)
Customer A [Member]      
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]      
Total accounts receivable [1] ¥ 18,241,469 [1]
Percentage of accounts receivable [1] 20.70%  
Customer B [Member]      
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]      
Total accounts receivable [1] ¥ 13,088,371 [1]
Percentage of accounts receivable [1] 14.80%  
Customer C [Member]      
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]      
Total accounts receivable [1] ¥ 9,018,665 [1]
Percentage of accounts receivable [1] 10.20%  
Customer D [Member]      
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]      
Total accounts receivable ¥ 4,393,790 [1] 630,875
Percentage of accounts receivable 13.00% [1]  
Customer E [Member]      
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]      
Total accounts receivable ¥ 4,376,768 [1] $ 628,431
Percentage of accounts receivable 13.00% [1]  
[1] Represented the percentage below 10%