Can civil servants in Bengbu, Anhui go to cram schools to substitute for them on weekends?

It is illegal for civil servants to make up lessons on weekends, because at present, the requirement for civil servants is one person and one post, that is, civil servants can only work in civil servants' posts, and they can no longer work part-time, hold positions in any profit-making units, and cannot do paid part-time jobs. If it is public welfare, it should be possible, but since it is a make-up class, it is estimated that there will be a charge, and civil servants cannot make up classes.