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Summary of Significant Accounting Policies (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2021 HKD ($) | Apr. 01, 2019 USD ($)
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Allowances for doubtful accounts | $ 693,639 | $ 511,037 |  |  |
Impairment loss |  | 261,574 | $ 76,425 |  |
Amounts of revenue recognized | $ 1,598,737 | 620,332 |  |  |
Description of value added tax | the Company was subject to a fixed rate of business tax of 3%. The applicable VAT rates are 6% and 3% for the entities that are general taxpayer and small-scale taxpayer, respectively. Distance Learning and Digital Information are both considered VAT general taxpayers since June 2015 |  |  |  |
Operating lease assets and liability |  |  |  |  | $ 47,000
Cash | $ 4,074,439 | 18,890,933 |  |  |
Cash deposits | $ 7,979,576 | 4,930,406 |  |  |
Concentration risk, supplier | For the years ended March 31, 2021, 2020 and 2019, no suppliers accounted for more than 10% of total purchases. |  |  |  |
B2B2C services [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Accounts receivable | $ 1,920,000 | 540,000 |  |  |
Third party [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Rate of interest on loan | 6.00% |  |  |  |
Customers [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Accounts receivable | $ 200,000 |  |  |  |
HKD [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Cash |  |  |  | $ 500,000 |
Cash deposits | $ 64,312 |  |  |  |
Minimum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Ownership interest | 20.00% |  |  | 20.00% |
Maximum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Ownership interest | 50.00% |  |  | 50.00% |
Customer Concentration Risk [Member] | Sales Revenue [Member] | Customer One [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Concentration risk customer percentage | 10.00% |  | 16.00% |  |
Customer Concentration Risk [Member] | Sales Revenue [Member] | Customer Two [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Concentration risk customer percentage |  |  | 13.00% |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Concentration risk customer percentage |  | 15.00% |  |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Concentration risk customer percentage |  | 11.00% |  |  |
3 months and less than 12 months [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Accounts receivable | $ 449,343 | $ 294,343 |  |  |
12 months [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Accounts receivable | $ 216,039 | $ 108 |  |  |

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