def process_page_2(self, response):
        soup = bs(response.m_response.content, 'lxml')
        cars_line_list = soup.select('div#series div.content-area dl.model-list dd a')
        for cars_line in cars_line_list:
            cars_line_name = cars_line.text
            url = 'http://www.che168.com' + cars_line['href']
            request = Request(url=url, priority=3, callback=self.process_page_3)
            request.meta['province'] = response.request.meta['province']
            request.meta['city'] = response.request.meta['city']
            request.meta['brand'] = response.request.meta['brand']
            request.meta['cars_line'] = cars_line_name
            yield request