What level does Jiujiang Chengxi Port belong to?

At the beginning of 2009, the Chengxi Port Area Administration of Jiujiang City was formally established, which was directly led by the Party Committee and Management Committee of Jiujiang Economic Development Zone, and belonged to a department-level (or sub-department-level) unit, which was lower than the Balihu New District established later. It can be seen from the name (one is the Management Bureau: Jiujiang Chengxi Port Area Management Bureau, and the other is the Jiulihu New Area Management Committee of Jiujiang City), while the Jiulihu New Area Management Committee of Jiujiang City and the Management Committee of Jiujiang Economic Development Zone are directly under the superiors of Jiujiang Chengxi Port Area Management Bureau and are at the same level (at the director level).