Why is there such a big flood in Shanghang, Longyan, Fujian?

I'm from the old county town of Shanghang, so you haven't heard of it. Last night, I learned that there was a flood in Shanghang. Not only did I burst into tears, but I was really afraid that something would happen to my villagers. I immediately took out my mobile phone and went back to ask what was going on, but I dialed 10, and only five people got through. I was really afraid that someone would have an accident and stayed up all night, but that was only one of the reasons. . . . . . . I wish the people of Shanghang an early end to this disaster.