display child posts based on category terms

I have a custom post type named city guide . The child post articles are displayed within the parent page.Child posts has custom category named as newyork and paris.

<div class="container">
<?php while( have_posts() ): the_post();  ?>
<div class="row main-content-wrap">
  <div class="col-md-12 long-post-sections-wrapper">
<?php while( $city_guide->have_posts() ): $city_guide->the_post(); 
$terms = get_the_terms( $post->ID , 'city-guide-cities-category' );
 // Loop over each item since it's an array
 if ( $terms != null ){
 foreach( $terms as $term ) {
 // Print the name method from $term which is an OBJECT
 print $term->name ;

} }
 ?> 

<div <?php post_class('city-guide-row row' . classes_related($wp_query->current_post) ); ?>>
    <div class="col-sm-8">
        <h3 id="<?php echo esc_attr( get_post()->post_name ); ?>"><?php the_title(); ?></h3>

        <?php the_post_thumbnail(); ?>
        <div class="img-caption"><?php echo get_post(get_post_thumbnail_id())->post_excerpt; ?></div>
        <?php the_content(); ?>
    </div>

    <div class="col-sm-4 map-container">

        <!-- google map -->
        <div class="map-wrapper">
            <div class="mobile-map-overlay" onClick="style.pointerEvents='none'"></div>
            <iframe frameborder="0" scrolling="no" marginheight="0" marginwidth="0"width="100%" height="260" src="http://ift.tt/1TjDj7E echo get_field('address',get_the_ID()); ?>&ie=UTF8&t=roadmap&z=6&iwloc=B&output=embed&z=16"></iframe>
        </div>

        <h5>Address</h5>
        <?php echo get_field('address'); ?><br/>
        <?php echo get_field('address_2'); ?>

        <h5>Contact</h5>
        <?php if(get_field('contact_number')): 
            echo '<a href="tel:' . get_field('contact_number') . '">' . get_field('contact_number') . '</a>';
        endif; ?><br/>
        <?php if(get_field('website')): 
            echo '<a href="' . get_field('website') . '" target="_blank">' . get_field('website') . '</a>';
        endif; ?><br/>
        <?php if(get_field('email')): 
            echo '<a href="mailto:' . get_field('email') . '">' . get_field('email') . '</a>';
        endif; ?>

    </div>
    <div class="clearfix"></div>
<hr class="city-row-separator"/>
<?php endwhile; ?>
</div>
</div>
<?php endwhile; ?>

I have printed print $term->name ; inside while so each child article is showing its own categories.

What i want to achieve is display newyork posts first and then paris.

if ( $term->name == 'newyork'){

}
elseif ( $term->name == 'paris'){

}

did not result what i expected.how can I achieve ?Please help