增: "Jia duo, tian, zeng jia" can be translated to "Add more, increase, augment," encapsulating the essence of enhancing or expanding in a culturally resonant manner.
港: Harbor, a haven of tranquility. When used in names, it often symbolizes a person of sincerity, steadfastness, and reliability.
Meaning: Zeng Gang signifies growth and prosperity, symbolizing development and flourishing.