However, Zhao Hai had thought of this situation when he was designing the sword boats. Therefore, the sword boats were very flexible. If a person used the sword boats well, they would be able to control them with ease. With Zhao Hai's special reminder, although the sword boats were not very suitable for their attacks at the beginning, they soon learned to attack in groups.
The sword boat's joint attack technique had been trained for a long time. Their joint attack technique was based on the Rubik's Cube formation. Although it was not as smooth as the Rubik's Cube formation, it was still very good. At least, it was enough to deal with such a situation.
