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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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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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