How to display news on wordpress page?

Question

metadata

There is a page for each brand (Roughly speaking, machine profiles), I want something below after the description to conclude 3 latest news. BUT I use tags, and I would like the news to be taken from the tags.
Something like this

Answer 1

$original_query = $wp_query;
$wp_query = null;
$args=array('posts_per_page'=>5, 'tag' => $brand_name);
$wp_query = new WP_Query( $args );
if ( have_posts() ) :
    while (have_posts()) : the_post();
        echo '<li>';
        the_title();
        echo '</li>';
    endwhile;
endif;
$wp_query = null;
$wp_query = $original_query;
wp_reset_postdata();