Under the guidance of the dwarves, Zhao Hai and the others got on the boat with the passengers on it. The dwarven driver followed them, while the other dwarven was in charge of rowing the boat.
The boat was moving very fast in the underground river. Zhao Hai noticed that there were magic lamps on the stone walls on both sides of the river, lighting up the entire River.
From time to time, there would be small boats carrying ores passing by. Those small boats were also very fast, but there were usually only dwarves driving the boats.
With the help of the magic lamps, Zhao Hai noticed that there were small docks on both sides of the river. There were small boats on the docks, some of which were carrying iron ores, and some of which were carrying weapons.