Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Cash flows from operating activities:
Net (loss) income	$ (1,033,101)	$ 698,466
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	59,338	73,311
Amortization of right-of-use assets	223,285	212,210
Loss from early termination of an operating lease	7,600
Loss from disposal of a subsidiary		69,045
Loss (gain) from investment in trading securities	28,733	(19,116)
Changes in operating assets and liabilities:
Accounts receivable	150,000	(1,650,000)
Accounts receivable – related parties	600,000
Deposits	(25,000)	55,000
Prepaid expenses and other current assets	128,845	12,232
Deferred revenue	(70,000)	(20,785)
Taxes payable	(6,915)	566,957
Accrued expenses and other liabilities	134,679	(561,677)
Lease liabilities	(214,877)	(190,357)
Net cash used in operating activities	(17,413)	(754,714)
Cash flows from investing activities:
Purchase of property and equipment	(5,086)	(8,140)
Investment in trading securities	(446,661)	(59,396)
Loans made to a related party	(17,710)	(100,000)
Collection of borrowings from a related party	20,000	1,500
Net cash used in investing activities	(449,457)	(166,036)
Net decrease in cash	(466,870)	(920,750)
Cash, beginning of period	606,022	1,750,137
Cash, end of period	139,152	829,387
Supplemental disclosure of cash flow information:
Cash paid for interest expenses
Cash paid for income tax	6,915
Supplemental disclosure of Non-cash investing and financing activities of discontinued operations
Right-of-use assets obtained in exchange for operating lease obligations		109,492
Disposal of right-of-use assets with decrease of operating lease obligations	$ 79,524