Income Taxes (Details Narrative) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Jan. 31, 2022
Change in valuation allowance	$ 3,400		$ 3,200
Deferred tax benefits	(424)	$ (43)
China Social Taxes [Member]
Deferred tax benefits	$ 20
Effective tax rates	32.90%
2022 Plan [Member]
Federal tax statutory rate	24.40%
Tax rate	21.00%
2023 Plan [Member]
Federal tax statutory rate	20.20%
Tax rate	21.00%

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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