Downstream, in the nearby village of Houlong, Zheng Jiayao says he and his neighbors noticed fewer fish and shrimp and a strange smell coming from the green slime sometimes coating the water.

• 在河流下游，家住后龙村的郑家耀说他和邻居们发现河里的鱼和虾越来越少，河面上绿色的油层发出阵阵异味，有时还能将整个水面覆盖。