An express train stopped at the midway station ten minutes before midnight, so this was probably a train station. Because if this was a high-speed train, it wouldn't stop midway because it would waste fuel. So this was probably a train station because the train needed to stop here to let the passengers get off the train and reload the goods. If there was a passenger at the midway station, then the person was most likely waiting for the train or preparing to get off the train. If you were to wait for a bus at the station, you would probably be discovered by the station staff or other passengers. But if you were getting off the train, you could easily find a safe place to sit down and wait for the train to arrive. There was also a possibility that it was a staff member because they might be here to carry out some maintenance work such as cleaning the station or inspecting the train. In summary, the situation here was very likely to be a train station, and there might be a person waiting for the train or preparing to get off the train, or a staff member.