A Question on Traffic in Taiwan (Taoyuan-Taipei-Taichung)

Update 1:

Reply to Ezack, thank you for your reply, but that's not the answer I want.

and 1. Guoguang Passenger Transport-Zhongxing Bus [1841] stops at Taiwan Taoyuan International Airport and goes to Taipei: Taoyuan Airport, Tower, Postal Center, Freight Station, Oil Depot, Shuzaipo, Zhangxia, Yulin, Tijak, Shuiwei, Sanshang, International Brand, Xizhou, South Asia and Taiwan. Minquan Songjiang, Minquan Jianguo, Minquan Longjiang, Minquan Renaissance, Minquan Dunhua, Songshan Airport to the airport: Songshan Airport, Minquan Dunhua, Minquan Renaissance, Minquan Longjiang, Minquan Jianguo, Minquan Songjiang, Minquan Jilin, MRT Zhongshan Station (formerly Minquan Linsen), Minquan Zhongshan, MRT Minquan West Road Station, Tuberculosis Prevention Association, Changji Chongqing Station, Minzu Chongqing Station, Jiuquan Sanshang, Shuiwei, Tijak, Yilin, Jiaoxia, Shuzaipo, Evergreen Freight Station, Freight Station, Postal Center, Taoyuan Airport ... Get off at Zhongshan Station of MRT ... According to the hotel, it takes 5 minutes to get off ... When you get off in Taipei, ask the driver ... where to wait for the bus at Taoyuan Airport ... and he will tell you. It takes about 2.5 to 3 hours to get to Taichung by train. The train ticket is about 4 yuan ... and get off at Taichung City. The high-speed train only takes 1 hour to get off in 7 yuan, but it will take you to get to the city ... and it may cost more than 5 yuan. Depending on where you are in Taichung, take the right bus.

Thank you for your reply, but that's not the answer I want.

Hello. 1. There may be some fluctuations in the price of the round-trip train. 2. They can all be delivered directly to the hotel. 3. The Taichung train in Taipei is cheaper.

The high-speed train is expensive but saves time.