Was M0 a Chinese art director that played M3 and M4
SELECT count(*) WHERE {
M0 a ns:film.film_art_director .
M0 ns:film.actor.film/ns:film.performance.character M3 .
M0 ns:film.actor.film/ns:film.performance.character M4 .
M0 ns:people.person.nationality ns:m.0d05w3
}