That was a truth that even Wu Jinhai couldn't refute. Last night, the old man named Liang helped the villagers to get rid of the disease in their bodies, but they couldn't be sure whether the disease would return or not.
So far, they had assumed that the source of the disease was the fish in the river, but that was just an assumption. They could not confirm whether there was another cause behind the disease or not. Therefore, Wu Jinhai couldn't refute it after hearing Xue Mingyu's words.
Wu Jingguo stood beside Wu Jinhai, and he could see how Xue Mingyu showed a triumphant smile after the Crown Prince did not reply to him. That smile managed to annoy him, but he didn't say anything because his older brother just kept quiet.