Educating at senior high schools;Educating at university or colleges;Educating at universities or colleges;Entertainment services provided at nightclubs;Production of course material distributed at professional lectures;Production of course material distributed at vocational lectures;Night clubs;Providing courses of instruction at post-graduate level;Production of course material distributed at professional seminars;Providing courses of instruction at college level;Production of course material distributed at vocational seminars;Entertainment services provided at country clubs.;