Were M5 and M7 directed by a Chinese actor of M1 , M2 , M3 , and M4 and edited by M6
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.character M1 .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3 .
?x0 ns:film.actor.film/ns:film.performance.character M4 .
?x0 ns:people.person.nationality ns:m.0d05w3 .
M5 ns:film.film.directed_by ?x0 .
M5 ns:film.film.edited_by M6 .
M7 ns:film.film.directed_by ?x0 .
M7 ns:film.film.edited_by M6
}