Gu Chengyu waited for quite a while, but he found that the river bandits who jumped into the water later seemed to have disappeared and still hadn't shown up. Their swimming skills were surprisingly good, able to hold their breath underwater for so long.
Gu Chengyu didn't dare to relax at all; his instincts told him that the first wave and the later ones that jumped into the water were not on the same level.
Suddenly, Gu Chengyu noticed a ripple appear on the water's surface in the most concealed part under the boat, though there was no sound of water. Normally, nobody could see clearly with lantern and torchlight, but they didn't know Gu Chengyu could see at night!
Gu Chengyu quietly pulled his bow and aimed at the ripple, shooting an arrow. With a "whoosh," the arrow shot into the water. There was no sound in the water, but Gu Chengyu saw a patch of red appear on the river surface, with a whirlpool slowly sinking down.
