public function sendArticle(array $articles)
    {
        // Convert single article array
        if (!is_int(key($articles))) {
            $articles = array($articles);
        }

        $response = array(
            'ArticleCount' => count($articles),
            'Articles' => array(
                'item' => array(),
            ),
        );

        foreach ($articles as $article) {
            $article += array(
                'title' => null,
                'description' => null,
                'picUrl' => null,
                'url' => null,
            );
            $response['Articles']['item'][] = array(
                'Title' => $article['title'],
                'Description' => $article['description'],
                'PicUrl' => $article['picUrl'],
                'Url' => $article['url'],
            );
        }

        return $this->send('news', $response);
    }