From TaoyuanInternationalAirport :
You can take the bus 1841 (Kuo-Kuang motor transport) and get off at MRT Zhongshan elementary school station, and than take a walk for 3 minutes. Or you can take the bus 1961 (Citi Air Bus) and get off at TatungUniversity, and than take a walk for 10 minutes.
From Taipei Main Station:
Taipei Main Station → Zhongshan Elementary Station Exit 4