Correct
五七干校
/ wǔ qī gànxiào /
Strokes
Definition
May 7 Cadre School (forcing educated people into re-education and peasant labor during Cultural Revolution)/abbr. for 五七干部学校[wǔ qī gàn bù xué xiào]
Example
As a Noun
May Seventh Cadre School ［farm-school for government officials, college and university staff and faculty, etc, named after Mao Zedong's May 7 Directive of 1966］