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Deferred Tax, Net (Details) - Schedule of deferred tax liability - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Schedule of deferred tax liability [Abstract]
Accrued expenses	$ 69,525	$ 70,019
Write-off Erdos TCH net investment in sales-type leases	5,954,586	6,155,300
US NOL	310,424	254,035
PRC NOL	10,934,511	10,849,690
Total deferred tax assets	17,269,047	17,329,044
Less: valuation allowance for deferred tax assets	(17,269,047)	(17,329,044)
Deferred tax assets, net

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Deferred tax asset noncurrent net operating loss.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences classified as other.

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