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Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Mar. 31, 2020
USD ($)
Segments
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Apr. 02, 2019
USD ($)
Aug. 10, 2015
Jun. 26, 2015
Summary of Significant Accounting Policies (Textual)            
Allowance for doubtful accounts $ 0 $ 0        
Advertising expenses 931 $ 19,769      
Impairment of long-lived assets      
Number of reportable segments | Segments 3          
Number of operating segments | Segments 3          
Operating lease right-of-use assets       $ 160,552    
Operating lease right-of-use assets and liabilities       $ 147,172    
Minimum [Member]            
Summary of Significant Accounting Policies (Textual)            
Cost method investments, ownership percentage 0.00%          
Equity method investment, ownership percentage 20.00%          
Maximum [Member]            
Summary of Significant Accounting Policies (Textual)            
Cost method investments, ownership percentage 20.00%          
Equity method investment, ownership percentage 50.00%          
Long Yun Hk [Member]            
Summary of Significant Accounting Policies (Textual)            
Ownership percentage         100.00%  
Sweet Lollipop [Member]            
Summary of Significant Accounting Policies (Textual)            
Ownership percentage           100.00%