v3.22.2.2
Bank loans (Details Narrative)
12 Months Ended
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2022
CNY (¥)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Short-Term Debt $ 462,029 $ 402,254  
Interest expense 35,361 $ 24,250  
China Construction Bank 1 [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Short-Term Debt 257,997   ¥ 1,636,000
China Construction Bank 1 [Member] | Ms Ting T Ing Chang [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Short-Term Debt $ 204,032   1,293,798
Debt Instrument, Interest Rate During Period 4.80%    
China Construction Bank 1 [Member] | Ms Ting Chang [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Debt Instrument, Interest Rate During Period 4.40%    
China Construction Bank [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Debt Instrument, Interest Rate During Period 3.8525%    
China Construction Bank 2 [Member] | Ms Ting Chang [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Short-Term Debt $ 366,653   ¥ 2,325,000