Qingfeng Road (subway station). According to the Baidu map query, Xuzhou Yunlong District Trademark Office is only 214 meters away from Qingfeng Road (subway station). It is the closest and only takes 5 minutes to get there. Yunlong District, affiliated to Xuzhou City, Jiangsu Province, is located in the southeast of Xuzhou and is named after the beautiful Yunlong Mountain.