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Deferred Tax, Net (Details) - Schedule of deferred tax liability - USD ($) | Mar. 31, 2021 | Mar. 31, 2020
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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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