test
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 't1', 'terms' => 'termt1', 'field' => 'term_id', 'operator' => 'IN', 'include_children' => false, ), array( 'taxonomy' => 't2', 'terms' => 'term2', 'field' => 'slug', 'operator' => 'AND', 'include_children' => true, ), );