Cash and Cash Equivalents (Tables)

3 Months Ended

Aug. 31, 2020

Accounting Policies [Abstract]

Schedule of cash and cash equivalents

	August 31,		May 31,
	2020		2020
Cash in banks	$	10,749,923	$	9,677,848
Money market funds		52,439		52,174
	$	10,802,362	$	9,730,022