def process_page_1(self, response):
        brand_list = list(json.loads(response.m_response.content.decode('gb2312')))
        for brand in brand_list:
            brand_dict = dict(brand)
            brand_name = brand_dict['name']
            url = response.nice_join(brand_dict['url']) + '/'
            request = Request(url=url, priority=2, callback=self.process_page_2)
            request.meta['province'] = response.request.meta['province']
            request.meta['city'] = response.request.meta['city']
            request.meta['brand'] = brand_name
            yield request