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Notes Payable (Details Textual)
9 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Mar. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Notes Payable (Textual)          
Notes payable $ 24,810,000        
Line of credit total 3,050,000        
Hangzhou United Bank [Member]          
Notes Payable (Textual)          
Notes payable 7,710,000        
Restricted cash 4,330,000        
Line of credit total 12,770,000        
Hangzhou United Bank [Member] | Notes Payable to Banks [Member]          
Notes Payable (Textual)          
Notes payable 21,758,227 $ 25,951,673      
Restricted cash 12,037,319 15,114,740      
Hangzhou United Bank [Member] | Notes Payable to Banks [Member] | RMB [Member]          
Notes Payable (Textual)          
Notes payable | ¥     ¥ 151,610,485 ¥ 174,203,868  
Restricted cash | ¥     ¥ 83,875,575 101,459,590  
Hangzhou United Bank One [Member] | Notes Payable to Banks [Member]          
Notes Payable (Textual)          
Restricted cash $ 7,709,089 $ 10,446,381      
Term of deposit 3 years 3 years      
Hangzhou United Bank One [Member] | Notes Payable to Banks [Member] | RMB [Member]          
Notes Payable (Textual)          
Restricted cash | ¥       ¥ 70,122,647 ¥ 53,716,636