My home is in Tangshan. It rained today. There are raindrops on my back neck. Is there any radioactive nuclear material? Will it threaten my health?

No, I am from Tangshan, too. Tangshan is a city with serious pollution. Every time it rains, if you wear white clothes, when the rain falls on you, the clothes will be a small mud spot when they are dry. Ha ha. As for the radioactive substance you mentioned, it should exist to a certain extent, but the degree should be within the healthy range. There's no need to worry.