v3.22.2.2
Stock-based compensation expense (Tables)
12 Months Ended
Mar. 31, 2022
Compensation Related Costs [Abstract]  
Schedule of fair value assumptions
             
Valuation date (the date of granting)  May 4, 2020      May 4, 2020  
Number of shares   300,000      300,000  
Vesting date   July 15, 2021      July 15, 2021  
Maturity date   July 15, 2026      July 15, 2027  
Fair value per share  $1.00  $ 1.00  
Exercise price per share  $0.50    $ 0.50  
Risk free rate   0.46%     0.46 %
Dividend yield   0.00%     0.00 %
Exercise multiple   2.80      2.80  
Expected terms (years) from the date of granting   6.20      7.20  
Expected volatility   48.73%     47.74 %
Value per Option  $0.611983    $ 0.632  
Schedule of stock-based compensation plan
     

Number of Shares

(post-Reverse Stock Split)

     Average Exercise Price per Share (post-Reverse Stock Split)    Weighted Average Remaining Contractual Term in Years 
                    
 Outstanding as of April 1, 2020              $N/A     N/A 
 Exercisable as of April 1, 2020               N/A     N/A 
                        
 Granted       600,000     $0.5     N/A 
 Exercised        —        —       —   
 Forfeited               —       —   
 Outstanding as of April 1, 2021       600,000      0.5     N/A 
 Exercisable as of April 1, 2021               —       —   
         -       -        
 Granted               N/A     N/A 
 Exercised       (300,000)    $0.5     N/A 
 Forfeited               N/A     N/A 
 Outstanding as of March 31, 2022       300,000     $0.5     5.4 
 Exercisable as of March 31, 2022              $—       —