Barcelona underground. We are at the Ciutadella/Vila Olimpica station. What is the next station?

From the first sight it seems to me that it is Barceloneta. That is because the line looks like a loader (IT). Yellow part of the line is what is already “loaded” whereas the white part is what still needs to be loaded.

In reality it is all vice versa. Arrows beside the L4 is the direction. Bingo!