Last week, I went to Guangzhou with my friends. We were so excited about the trip, it took us three hours to arrive in Guangzhou railway station. At first, we were so confused about how to get out of the railway station, then we saw the big sign which showed us to take the metro. When we got to the subway station, a big picture was showed in front of us, we figured out our way quickly. When we were in the metro, we counted the time, we never thought it was so quickly, we just spent ten minutes to reach our destination, we found our hotel soon. Metro is so convenient, we don't have to go out of the railway station, we just need to find the subway's entrance. What's more, it is very fast, unlike bus, which will turn around many roads, metro just goes the straight line.