Senses
五七 35th day after death
The 35th day after a person's death, marked by traditional memorial ceremonies or religious services in Chinese custom
五七 five to seven
An approximate number, usually meaning about five or seven of something
五七 May 7th Cadre Schools
A reference to the labor schools established in 1968 during the Cultural Revolution for the re-education of intellectuals and officials
五七 May 7 Directive
The 1966 directive by Mao Zedong that led to the establishment of cadre schools and emphasized manual labor for intellectuals