Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	May 31, 2019	May 31, 2018
Cash flows from operating activities:
Consolidated net income (loss)	$ (1,299,055)	$ 556,030
Adjustments to reconcile consolidated net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	11,586	14,339
Unrealized (gain) loss from marketable securities, net	8,928	(15,272)
Loss on sale of fixed asset	2,882
Deferred income taxes	(558,000)	28,000
Changes in operating assets and liabilities:
Accounts receivable-trade	(215,758)	96,468
Other receivables	(3,227)	16,361
Prepaid expenses	(20,138)	78,053
Prepaid and recoverable income taxes	(24,171)	66,619
Accounts and other payables and accrued expenses and other current liabilities	534,667	409,549
Advances from customers	(21,218)	(119,482)
Net cash provided by (used in) operating activities	(1,583,504)	1,130,665
Cash flows from investing activities:
Proceeds from maturities of marketable securities	740,000	992,000
Purchases of marketable securities	(739,000)	(493,000)
Proceeds from sale of fixed asset	10,000
Purchases of equipment and leasehold improvements	(3,244)	(21,415)
Net cash provided by investing activities	7,756	477,585
Cash flows from financing activities:
Cash dividend paid		(1,962,062)
Distributions to noncontrolling interest	(52,700)	(46,727)
Net cash used in financing activities	(52,700)	(2,008,789)
Net decrease in cash and cash equivalents	(1,628,448)	(400,539)
Cash and cash equivalents at beginning of year	5,323,437	5,723,976
Cash and cash equivalents at end of year	3,694,989	5,323,437
Supplemental disclosures of cash flow data:
Income taxes paid	$ 52,000	$ 286,000