May I ask the hero, how to go from Kaohsiung to Alishan and Sun Moon Lake? Is there a direct train? Or is it more convenient to go from Taipei?

To Alishan: Take the Taiwan Railway from Kaohsiung Railway Station to Chiayi Station, and then change to a bus to go up the mountain. To go to Sun Moon Lake, take the Taiwan Railway from Kaohsiung Railway Station to Taichung Station, and then change to a bus.

There are no direct trains. No matter starting from Kaohsiung or Taipei, it is a train to Taichung, and a bus goes up the mountain. Or charter a car to go.

Take the high-speed rail from Kaohsiung to Chiayi, about half an hour, then take a bus or chartered car to Alishan, about 2-3 hours. Take the high-speed rail from Kaohsiung to Taichung, about 1 hour, then take a bus or chartered car to Sun Moon Lake, about 2 hours.