change_excerpt

/**
 * Change Trim from Words to Character
 * change '2' to many character you want to display in exceprt
 */

function custom_trim_by_character( $excerpt, $post_id, $length, $excerpt_more ) {
    $post         = get_post( $post_id );
    $post_excerpt = $post->post_excerpt;

    if ( empty( $post_excerpt ) ) {
        $post_excerpt = $post->post_content;
    }

    $post_excerpt = preg_replace( '/\[[^\]]+\]/', '', $post_excerpt );
    $post_excerpt = wp_trim_words( $post_excerpt, 9999, '' );
    $post_excerpt = substr( $post_excerpt, 0, 2 ) . '...';

    return $post_excerpt;
}
add_filter( 'jnews_module_excerpt', 'custom_trim_by_character', 10, 4 );