Train horns

The Canadian Pacific Railway railroads around here run at any hour, on no schedule. So every once in a while, you'll hear a few horn blasts and the rumbling over rails. I guess my first association with trains is in Tangshan, my mom's home town. I must have visited and heard a lot of trains (Tangshan is a coal mining city) at night while I slept. From then on, any time I hear those train horns, I think of Tangshan and my relatives there.