Did a Chinese art director direct M3 and M4 and write M1
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.director.film M3 .
?x0 ns:film.director.film M4 .
?x0 ns:film.writer.film M1 .
?x0 ns:people.person.nationality ns:m.0d05w3
}