Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property and equipment, net - Summary of Property, Plant and Equipment's (Detail) ¥ in Thousands, $ in Thousands	Mar. 31, 2021 USD ($)	Mar. 31, 2021 CNY (¥)	Mar. 31, 2020 CNY (¥)
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		¥ 24,761	¥ 18,452
Less: Accumulated depreciation		(16,375)	(13,471)
Property and equipment, net	$ 1,280	8,386	4,981
Warehouse Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		2,513	2,426
Furniture, Computer And Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		6,592	5,864
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		2,891	1,912
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		10,056	5,555
Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		¥ 2,709	¥ 2,695