That was the idea. Explore Taiwan island by train only. Except for one section in the South, I managed to circle the island around using high-speed and commuter trains. As with Japanese RailPass, I opted for Taiwanese 5 Day Rail Pass, instead of having to queue, dealing with foreign ticket counters, purchasing the ticket on every leg of my journey. Well, the reality was that I still had to use logistics and organisation skills to secure a seat or connection. I would say that it was a creative and definitely innovative way to travel to Taiwan. All in all, I had to purchase one extra ticket for a high-speed train going from Taoyuan to Chiayi. Bear in mind that Terminal for high-speed trains is located 5 miles from the city centre. I got there much quicker but then I had to take a connecting bus to the city. It is worthwhile to double check what type of train is more convenient. In my case, I just needed to get to my hostel before midnight. With the commuter train going directly to the city of Chiayi it would still take me 3 more hours.