Family education instructors need to apply theoretical knowledge such as pedagogy, psychology and family systematics to help families establish good family relationships (husband-wife relationship, parent-child relationship, mother-in-law relationship), guide families to cultivate good children, help children grow up together in study and psychology, and realize family happiness.
If you are interested, you can have a look at "Research on Family Education Tutors of Jialai Education" (see my homepage or Baidu search for Jialai Education).