4. EARNINGS/(LOSS) PER SHARE (Details) - USD ($)	12 Months Ended
	May 31, 2018	May 31, 2017
Earnings Per Share [Abstract]
Numerator - net income/(loss) attributable to common stockholders	$ 98,707	$ (964,462)
Denominator - weighted average number of common shares outstanding	54,514,765	54,514,765
Basic and diluted earnings/(loss) per common share	$ 0.00	$ (0.02)