This is a very beautiful and peaceful park, you should come here with biking.
I strongly suggest not to visit the cache along. By combining following caches, you could have a very unforgettable and unique Taoyuan Grand Canals geocaching trip that I guarantee!
GC1JF2X TYPE38: Guang-Fong Park, by edgehung
GC1N89X TYPE37: Bade Reservoir Pond Park, by edgehung
GC1DVN3 No. 3 Tunnel - Ancient canals series, by CyclingTaiwan
GC1DVGB 3 "water" marks - Ancient canals series, by CyclingTaiwan
Be careful, all caches listed above, include 3rd and 4th, are all puzzle caches. Cache locations are all not at the coords listed at their cache listing pages. Actually, my cache is located at the entrance if you visited the 4th cache above.
Good Luck and wish you could know Taoyuan Great Canals better after visiting all these caches.