Is it better to be a plumber in a property company or a gas station, which is more discoverable and technical?

In contrast, plumbers are of course more technical. ...

But when it comes to development ... it's not easy to talk about these two kinds of jobs ... If you want to develop, you can't limit yourself to these two kinds of jobs. In other words, it is impossible to get promoted just by working ... Only by constantly mastering new skills and constantly challenging new positions can we develop. ...