I went there a year or two ago. We got off at Fulong station and walked back up the road in the Keelung (Jilong) direction til' we got to the gas station, where we turned left and walked up the smaller road towards Shuili for about a kilometer. Then you turn left again up an even smaller road to the trailhead. There's a fair bit of uphill, mostly on stone steps, but nothing too serious -- plenty of tai-tais in high heels who didn't seem to be struggling. You come out at a big temple at the other end which is very near the train station. Quite a pleasant walk, but it gets pretty crowded at the weekend.