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Summary of Significant Accounting Policies (Details) - Schedule of deferred revenue - USD ($) | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Schedule of deferred revenue [Abstract] |  |
Beginning balance | $ 1,524,918 | $ 620,332
Ending balance | 4,141,555 | 1,524,918
Increase | $ 2,616,673 | $ 904,586

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(5)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredRevenueCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of increase (decrease) in deferred revenue. + References No definition available. + Details
Name: | us-gaap_DeferredRevenuePeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | wfel_ScheduleOfDeferredRevenueAbstract
Namespace Prefix: | wfel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration