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Income Taxes (Details)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Taxes [Abstract]
Statutory rates in Cayman Islands and BVI	0.00%	0.00%	0.00%
Statutory rates in Hong Kong	15.00%	0.00%	0.00%
Statutory rates in PRC	25.00%	25.00%	25.00%
Foreign earned income not subject to taxes in the Cayman Island	(40.00%)	(25.00%)	(25.00%)
Additional accruals in the PRC	83.50%	12.00%	21.00%
Effect of valuation allowance	0.00%	8.20%	0.00%
Effective income tax rate	83.50%	20.20%	21.00%

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The percent effective income tax rate reconciliation additional.

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

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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 changes in the valuation allowance for deferred tax assets.

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