Summary of Significant Accounting Policies - Schedule of Concentration of Risks (Details)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Concentration percentage	10.00%
Customer Concentration Risk [Member] | Revenues [Member]
Concentration percentage	32.40%	53.70%
Customer Concentration Risk [Member] | Revenues [Member] | Customer A [Member]
Concentration percentage	19.10%	10.00%
Customer Concentration Risk [Member] | Revenues [Member] | Customer B [Member]
Concentration percentage	13.30%	0.00%
Customer Concentration Risk [Member] | Revenues [Member] | Customer C [Member]
Concentration percentage	0.00%	24.60%
Customer Concentration Risk [Member] | Revenues [Member] | Customer D [Member]
Concentration percentage	0.00%	19.10%
Customer Concentration Risk [Member] | Accounts receivable [Member]
Concentration percentage	26.50%	48.40%
Customer Concentration Risk [Member] | Accounts receivable [Member] | Customer A [Member]
Concentration percentage	26.50%	0.00%
Customer Concentration Risk [Member] | Accounts receivable [Member] | Customer B [Member]
Concentration percentage	0.00%	19.00%
Customer Concentration Risk [Member] | Accounts receivable [Member] | Customer C [Member]
Concentration percentage	0.00%	29.40%
Customer Concentration Risk [Member] | Accounts receivable [Member] | Customer D [Member]
Concentration percentage	0.00%	0.00%