我认为这很简单。我从这里得到参考：https://www.advancedcustomfields.com/resources/query-posts-custom-fields/

$findNumber = 150;

$args = array(
    \'posts_per_page\'    => -1,
    \'post_type\'     => \'photos-videos\',
    \'meta_query\'    => array(
        \'relation\'      => \'AND\',
        array(
            \'key\'       => \'max_number\',
            \'value\'     => $findNumber,
            \'type\'      => \'NUMERIC\',
            \'compare\'   => \'>=\'
        ),
        array(
            \'key\'       => \'min_number\',
            \'value\'     => $findNumber,
            \'type\'      => \'NUMERIC\',
            \'compare\'   => \'<=\'
        )
    )
);

// query
$the_query = new WP_Query( $args );