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Notes Payable (Details)
Jun. 06, 2024
USD ($)
Jun. 06, 2024
CNY (¥)
Mar. 31, 2024
USD ($)
Mar. 31, 2024
CNY (¥)
Mar. 31, 2023
USD ($)
Mar. 31, 2023
CNY (¥)
Debt Instrument [Line Items]            
Bank notes payable     $ 31,676,335 [1] ¥ 228,712,642 $ 29,255,776 [1]  
Deposit     32,247,552   31,558,338  
Line of credit total $ 5,540,000 ¥ 40,000,000        
Notes Payable to Banks [Member]            
Debt Instrument [Line Items]            
Bank notes payable     31,680,000      
Hangzhou United Bank [Member]            
Debt Instrument [Line Items]            
Bank notes payable         29,255,776 ¥ 200,916,968
Restricted cash     12,657,839 91,393,395 12,217,616 83,905,700
Bank credit line facilities available for borrowing     19,250,000      
Hangzhou United Bank [Member] | Notes Payable to Banks [Member]            
Debt Instrument [Line Items]            
Restricted cash     8,160,000      
Collateral amount     4,501,198 ¥ 32,500,000 $ 4,732,366 ¥ 32,500,000
Bank credit line facilities available for borrowing     230,000      
Deposit     4,500,000      
Line of credit total     $ 31,910,000      
[1] As of March 31, 2024, the Company had $31,676,335 (RMB228,712,642) of notes payable from HUB. The Company is required to hold restricted cash in the amount of $12,657,839 (RMB 91,393,395 ) with HUB as collateral against these bank notes. Included in the restricted cash is a total of $4,501,198 three-year deposit (RMB32,500,000) deposited into HUB as a collateral for current and future notes payable from HUB. As of March 31, 2023, the Company had $29,255,776 (RMB 200,916,968) of notes payable from HUB. The Company is required to hold restricted cash in the amount of $12,217,616 (RMB 83,905,700 ) with HUB as collateral against these bank notes. Included in the restricted cash is a total of $4,732,366 three-year deposit (RMB32,500,000) deposited into HUB as a collateral for current and future notes payable from HUB.