A: Guangzhou Huadu District is a first-tier city, because Guangzhou Huadu District belongs to a district under the jurisdiction of Guangzhou, and Guangzhou is a first-tier city, so its subordinate districts should also belong to first-tier cities. Huadu District belongs to Guangzhou City, Guangdong Province. Located at the north gate of Guangzhou, Huadu District is the main traffic route between the north and the south. It is known as the barrier of the provincial capital, the throat of the north and south Guangdong, and the north gate and the back garden of Guangzhou. Huadu District is located at 23 14 ′ 57 ″-23 37 ′ 18 ″ north latitude and 112 57 ′ 07 ″-113 28 ′ 10 ″ east longitude, with Conghua in the east, Sanshui and Nanhai in Foshan in the west, Baiyun District in the south and Qingyuan City in the north.