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Long-Term Investment (Details) - USD ($) | Oct. 31, 2022 | Jul. 31, 2022 | May 31, 2022 | Apr. 30, 2022
--- | --- | --- | --- | ---
Long-Term Investment (Details) [Line Items] |  |  |  |
Investment | $ 275,000 |  |  |
Equity interest | 0.73% | 0.90% |  |
Armstrong [Member] |  |  |  |
Long-Term Investment (Details) [Line Items] |  |  |  |
Equity interest | 0.90% |  |  |
Solarever [Member] |  |  |  |
Long-Term Investment (Details) [Line Items] |  |  |  |
Investment |  | $ 185,000 |  | $ 2,000,000
Equity interest |  | 0.49% |  | 5.25%
Armstrong [Member] |  |  |  |
Long-Term Investment (Details) [Line Items] |  |  |  |
Investment | $ 151,294 | $ 150,000 | $ 2,000,000 |
Equity interest |  |  | 12.00% |

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